Hey everyone I'm trying to gauge if my note pro is faulty or if this is just normal for them. It seems to take a really long time to charge and I've even had the battery percentage go down While plugged in and doing some light browsing. Here's a screenshot of the battery info while charging and it seems like that's a really long for it to charge. I appreciate any insight thanks.
Sent from my SM-P900 using XDA Free mobile app
If you are using less than 2 amp charger it will not keep up with tablet on. Tablet off charging time doubles if 1 amp charger. I use a standard micro USB cable usually, the usb 3 cable charges faster when using 2 amp charger I believe.
Sent from my SAMSUNG-SM-P907A using XDA Free mobile app
Not sure why the screenshoot I took didn't show but let me try again.
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I've had the tablet discharge even when using the 2A charger, but it was microusb not usb3. If I'm using the 2A brick does the microusb vs usb3 cable make a difference?
The screenshoot was taken while plugged into a microusb cable into a 1A brick. I get that the 1A will be slower, but 2 hours to go 15% seems crazy and the tablet was merely powered on and connected to wifi, not in use.
Rockman195 said:
Hey everyone I'm trying to gauge if my note pro is faulty or if this is just normal for them. It seems to take a really long time to charge and I've even had the battery percentage go down While plugged in and doing some light browsing. Here's a screenshot of the battery info while charging and it seems like that's a really long for it to charge. I appreciate any insight thanks.
Sent from my SM-P900 using XDA Free mobile app
Click to expand...
Click to collapse
Common problem of Galaxy Note and Tab Pro: cracked battery connector. Resolder battery connector will fix : quick discharge, long charge time, not fully charged, battery capacity fluctuation....etc...
This black battery connector was re soldered already to fix this problem:
As seen in above picture, battery cables are not fully contact with pins of male battery connector also are the source of problem.
The fix is simple: pushing the opening closer, you need a magnified glass and thin knife to do this:
After the fix, this is a good connection between male and female battery connector:
It takes Exynos (which a P900 is) Note 12's over 8 hours to fully charge. I had a Exynos 10.1-14 and it took seven hours. It's one of the reasons I got a Snapdragon Note 12 because it cuts charging time dramatically.
A few things to consider:
Never, absolutely never use a 1A charger with a device this powerful. It will drain more than it charges.
1A chargers are not powerful enough for modern quadcore devices. Even the Note 3 (which has the same hardware) requires 2 hours to charge 30% when using a 1A charger. (It has a significantly smaller battery than the NotePro)
USB2/MicroUSB charges at a rate of 500mA.
USB3 charges at a rate of 900mA.
(The small side of the USB3 plug is what makes it USB3, the other side is just a regular MicroUSB 2.0)
This also applies to the amount of power the cable itself will transfer. A such, using a USB2.0 cable will severely limit charging speed.
Another thing of importance is the device itself. The P905 has Qualcomm Fastcharge. The P900 does not. That amounts to several hours of difference in charging rate.
ShadowLea said:
A few things to consider:
Never, absolutely never use a 1A charger with a device this powerful. It will drain more than it charges.
1A chargers are not powerful enough for modern quadcore devices. Even the Note 3 (which has the same hardware) requires 2 hours to charge 30% when using a 1A charger. (It has a significantly smaller battery than the NotePro)
USB2/MicroUSB charges at a rate of 500mA.
USB3 charges at a rate of 900mA.
(The small side of the USB3 plug is what makes it USB3, the other side is just a regular MicroUSB 2.0)
This also applies to the amount of power the cable itself will transfer. A such, using a USB2.0 cable will severely limit charging speed.
Another thing of importance is the device itself. The P905 has Qualcomm Fastcharge. The P900 does not. That amounts to several hours of difference in charging rate.
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Click to collapse
Interesting and good to know. Would a Micro USB to usb3 adapter do anything on a cable or no? Ordered some 2a power bricks since I only had one previously
Sent from my SAMSUNG-SM-G920A using XDA Free mobile app
ShadowLea said:
Using a USB2.0 cable will severely limit charging speed.
Click to expand...
Click to collapse
Not true. The way Samsung implented USB 3.0 the sole advantage is transferring files from the device more quickly. So no need to waste money on clunky USB 3.0 cables that arent compatible with other mobile devices. From Anandtech...
There’s been a lot of talk about the presence of USB 3.0, even though the micro B connector type has been around for considerable time already and in a ton of devices. The Note 3 just has the misfortune of apparently being many people’s first exposure to the connector, whose awkward double lobed shape gives it forwards compatibility with microUSB 2.0. The rightmost region is just the familiar microUSB 2.0 connector, the left contains the pins for SuperSpeed signaling for 3.0. Plug something into the right 2.0 jack and you get 2.0 speed for transfers and charging. 3.0 at present should give you faster transfer rate, and eventually faster charging, but the Note 3 continues to use Samsung’s 2.0 amp charging spec and rate, but more on that later.
Charging is an interesting story on the Note 3, but primarily because of what doesn’t change. The Note 3 continues to use Samsung’s tablet charging specification and charger, which has 2 amps of maximum output. The Note 3 draws 2 amps over a considerable amount of the charging curve, like other Samsung devices (in the linear part of the charge curve). USB 3.0 doesn’t change things up here quite yet with the new supported charge voltages that are coming eventually with the power delivery specification.
The move to USB 3.0 is interesting and could be a big benefit when it comes to getting large files off of the device (the NAND/eMMC isn't quick enough to make USB 3 any faster at putting data on the phone).
http://www.anandtech.com/show/7376/samsung-galaxy-note-3-review
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Click to collapse
BarryH_GEG said:
Not true. The way Samsung implented USB 3.0 the sole advantage is transferring files from the device more quickly. So no need to waste money on clunky USB 3.0 cables that arent compatible with other mobile devices. From Anandtech...
[/i]
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Agree . . I may not have an inline amp meter to verify for sure but based on my own charge rate observations using GSam Battery Monitor Pro I see no noticeable difference between a 2.0 vs stock 3.0 cable using the stock charger.
Those charge ratings quoted by Shadowlea I believe are for the USB specs themselves which may or may not be adhered to when the device is plugged into a computer but don't necessarily translate to using 2.0 vs 3.0 cables on 2 amp chargers.
muzzy996 said:
Those charge ratings quoted by Shadowlea I believe are for the USB specs themselves which may or may not be adhered to when the device is plugged into a computer but don't necessarily translate to using 2.0 vs 3.0 cables on 2 amp chargers.
Click to expand...
Click to collapse
If we have Quick Charge, and I'm not sure we do, it's 1.0. The Note 4 was the first to support adaptive fast charging which Qualcomm introduced in QC 2.0.
From Qualcomm...
In laboratory tests using a 3300mAh battery, a Quick Charge 2.0 enabled device went from 0% to 60% charge in 30 minutes, while a device without Quick Charge 2.0 using a conventional (5 volt, 1 amp) charger achieved just a 12% gain in the same 30 minutes. A device with Quick Charge 1.0 managed a 30% charge in that time period.
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Click to collapse
BarryH_GEG said:
Not true. The way Samsung implented USB 3.0 the sole advantage is transferring files from the device more quickly. So no need to waste money on clunky USB 3.0 cables that arent compatible with other mobile devices. From Anandtech...
[/i]
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When using the same charger: (Namely the original NotePro charger)
(Ignore the average rate, that's useless given the fact that I just installed the app).
With Original Samsung TabPro USB 2.0 MicroUSB cable:
With Original Samsung NotePro USB 3.0 Cable:
Both cables are the same age, both are official and neither is damaged. Fun fact, the NotePro cable is 1 meter longer, but still charges faster.
I get the exact same results on my Note 3 and my S5.
The NotePro can't be charged through a computer's USB port, by the way. Not without turning the device off completely and waiting three days.
You can't charge any faster than the 2A spec Samsung's provided no matter what charger and cable you use. Some non-Samsung cables and chargers may degrade charging but peak is peak. There are two sites I don't question and they're Anandtech and GSMArena. I accept what I quoted as truth. That and I personally see no charging difference using my stock 3.0 Cable and charger and my Note 5's fast charger and cable used in multiple combinations.
BTW, we do have Quick Charge 1.0; it started being included in Snapdragon S3's. It's 30% faster than a 1A charger but Samsung's always supported 2A so I don't know what the actual benefit is to us. 15%?
Related
Would it be safe to charge the batter at 1000mA compared to the stock 700mA the charger provides?
yes, i do it all the time
I use the charger from the Galaxy Tab all the time, it's rated at 2A and the S does see it as a proper charger. I've not checked, but I also think it charges the phone faster than the stock charger.
terje.tel said:
I use the charger from the Galaxy Tab all the time, it's rated at 2A and the S does see it as a proper charger. I've not checked, but I also think it charges the phone faster than the stock charger.
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yes it does
the higher the Amp, the faster it charges
however this is not compatible with all phones
the SGS is a good phone, my Motorola will not charge if you exceed or you are under the original charger spec (which is totally stupid) but i understand it is to protect the phone, from over heating
SNS also accepts higher output chargers
So can I use this ?
actually it is ipad charger, 5.1V 2.1A output.
On the phnoe label it is printed max~1000mA
but this is 2.1A.....(2100mA)
it seems too high...
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The battery might heat up to a high temp and if done regularly it could very well shorten the life span significantly.. the stock 700mA charger makes the battery warm, Im guessing that 2100mA will make it very hot, but you can try for like 30mins of charging see if thats the case.. if you can just say its warm then I would presume its safe.
700 to 1000mA charging has very little difference on the warmth that i feel from the battery.
If you have the International Galaxy S GT-I9000 it won't charge any faster than about 450mA regardless of the charger rating (from my tests). You can get a higher-capacity charger but it won't make any difference and is quite safe so long as the voltage is correct.
TheBeano said:
If you have the International Galaxy S GT-I9000 it won't charge any faster than about 450mA regardless of the charger rating (from my tests). You can get a higher-capacity charger but it won't make any difference and is quite safe so long as the voltage is correct.
Click to expand...
Click to collapse
The International Galaxy S I have comes with a 700mA charger though, there is a noticeable charge difference between a USB port (500mA) vs the stock charger (700mA) and my 1000mA charger
If 2100mA is also supported, the charge time will become in just 43min (in theory).
And if the charge circuit is safe enough, it will control the current to 700~1000mA, and it will drive below 200mA in the beginning of charge.
Just try plugged to my phone, it is charging as USB not AC,
so I think the currect will limit to 500mA.....
will try again later, my battery is still full now.
If theres a 500mA limit why do I get faster charging speeds with the wall charger compared to the USB ?
EarlZ said:
If theres a 500mA limit why do I get faster charging speeds with the wall charger compared to the USB ?
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Click to collapse
That's the question..
I'm using data cable, so the phone just detect plugged to USB i/o AC power.
maybe I need to use straight miniusb power cord.
Then it will really challenge the phone in 2.1A
On the other hand, IP4 & Ipad can draw 1A from computer USB, (need new motherboard)
what about Galaxy S !?
I will test it later.
terje.tel said:
I use the charger from the Galaxy Tab all the time, it's rated at 2A and the S does see it as a proper charger. I've not checked, but I also think it charges the phone faster than the stock charger.
Click to expand...
Click to collapse
If the charge time is less than one hour,
you are getting benefit of high current.
johan8 said:
That's the question..
I'm using data cable, so the phone just detect plugged to USB i/o AC power.
maybe I need to use straight miniusb power cord.
Then it will really challenge the phone in 2.1A
On the other hand, IP4 & Ipad can draw 1A from computer USB, (need new motherboard)
what about Galaxy S !?
I will test it later.
Click to expand...
Click to collapse
Im not 100% sure but the USB 2.0 specification is 500mA only.
EarlZ said:
Im not 100% sure but the USB 2.0 specification is 500mA only.
Click to expand...
Click to collapse
Yes I know.
But IP4 and Ipad is also USB2.0
johan8 said:
Yes I know.
But IP4 and Ipad is also USB2.0
Click to expand...
Click to collapse
In relation to what you said that IP4 and IPxD can draw 1A, thats why I said the USB 2.0 spec is only 500mA so those devices cant draw more than 500mA on a USB port.
EarlZ said:
In relation to what you said that IP4 and IPxD can draw 1A, thats why I said the USB 2.0 spec is only 500mA so those devices cant draw more than 500mA on a USB port.
Click to expand...
Click to collapse
IP4 is USB2.0 Device,
plug into high power USB port (that is USB3.0 port)
USB2.0 IP4 can draw over 500mA
I know what you mean, if the source is USB2.0 of course you can't draw higher than 500mA.
My point is, if the device can draw higher than 500mA, just like the usb2.0 IP4,
and if galaxy s can draw that high,
then we can get benefit from the high output usb ports and also that high output usb charger.
Hello everybody,
I want to share my experience.
So I have a Samsung galaxy S, and usually I charged it with the original charger (700mA).
I tried with a 1000mA one. The charger was really faster than with the original one. So I thought that if I buy the galaxy tab's charger (2000mA) it would be faster.
It's what I did. But the problem is that it's not faster with this one than with the 1000mA one.
I think the problem comes from the USB limit of charge (1000mA in a outlet, 500mA on a USB port from a computer).
But I have a problem with this... I mean, the galaxy tab is charged by an USB cable too, even if it's not the same plug out (I don't know the name of this plug out, I know on the galaxy S it's a micro-USB) on the cable, it's still an USB cable. So why this USB cable can give 2000mA while it uses an USB technology ?
it's definitely faster charging on a 1200 nokia charger..
Sent from my GT-I9000 using XDA App
I can't help myself and I must tell you guys something. The mA of a charger means how much current it can provide in 1 hour, imagine it like a pipe through which only a ammount of watter can pass. Now going back to the phone... We have a 1500mA batt which means that if we use a 25000mA charger it will only output 1500mA... So it is useless to use a more powerfull charger than 1500mA. I hope you understand what I said
That is a 1500mA*h* battery which means capacity and not current.
Sent from my GT-I9000 using XDA App
My GF ran over my mains charger cable with the vacum cleanerr at the weekend, so i ordered i new one from Ebay. Rather stupidly (as an "official" one would only be £1 more), i bought this unbranded one:
UK MAINS CHARGER FOR SAMSUNG i5700 i9000 GALAXY S on eBay (end time 02-Apr-11 14:51:41 BST)
When it arrived i noticed that the output is different: 5.5v 500ma as opposed to 5v 700ma from the one that came with the phone.
I know tha ampage will affect charging speed, but am concerned about the extra 0.5 voltage. Is this safe to use?
I'm curious about this too... I thought the "U" in USB meant Universal.
I just ordered 2 micro USB chargers from Ebay for my GF's Sony Vivaz Pro and my Captivate... neither work.
Her's doesn't recognize the charger at all... mine beeps and says "charging", but the battery level never goes up.
My chargers are 5v 500mA.
The chargers were listed as Blackberry chargers, but had a long list of compatible phones underneath (none matched our phones, to be fair.)
Now I'm afraid to buy any more generic chargers....
I don't know if the output voltage is part of the USB standard or not. I know that computers output 5v and it seems like a lot of phone chargers also do. However, i've seen some external battery chargers listed as compatible with the SGS listed as 5.2v, so maybe theres an accepted voltage range? Does anyone know for sure if a 5.5v is acceptable?
I'm not sure why the ones you have don't work as the specs seem right,possibly they are faulty?
paddyb said:
I don't know if the output voltage is part of the USB standard or not. I know that computers output 5v and it seems like a lot of phone chargers also do. However, i've seen some external battery chargers listed as compatible with the SGS listed as 5.2v, so maybe theres an accepted voltage range? Does anyone know for sure if a 5.5v is acceptable?
I'm not sure why the ones you have don't work as the specs seem right,possibly they are faulty?
Click to expand...
Click to collapse
Yeah, I'm not sure. I certainly thought so, even though it seemed pretty "unlucky" they both might be faulty.
I did ask the seller, and they claim they are NOT compatible with my phones, but I just don't get it. They're offering me a refund, but at $4 each it's hardly worth my time mailing them.
I found some forums online of a small handful of people like me with chargers that won't work. It seems people with this issue were using 500mA chargers, and anyone using a 700 or 1000 had no problems. This wasn't necessarily because all phones either require 500 or 1000.... Someone also said it's only very certain phones that are built this way. That they require newer, or more powerful chargers... but that it's not the case with all new phones/smartphones.
But there were others who said 500 should charge it, just more slowly.
I still think Micro usb is Micro usb, period. That's why the EU (and here) have been looking at making these chargers universal. I think I'll just try my luck again with another charger.
You could try this one, which claims to be (and looks like), an official SGS charger:
http://cgi.ebay.co.uk/Samsung-i9000...ories_MobilePhoneChargers&hash=item2c5b2d355a
5.5V is supported. I've tested a very wide range of chargers for my SGS and all worked.
The voltage range of these chargers is 4.8V - 5.6V and all worked just fine.
I've actually got an original Nokia USB charger which is declared at 5.0v/550mA and it works like a charm...
Model is AC-6E:
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Well finally decided to give the ebay charger a go. Plugged it in, a green light lit up and plugged the phone in. The phone didn't recognise the charger, no indication the the notification bar that the battery was charging. Unplugged it and and tried again, and now the light on the charger doesn't even come on! Won't be using it again.
Another question on the topic : Is it save to use charger with higher Amperage ?
I mean original samsung one is 0.7A, could something go wrong if I´ll use 1.0A charger? Thanks
EDIT : Answer no needed anymore - found it in another topic. It should be safe
I believe any microUSB charger will be safe. Ideally, you want the highest voltage and highest current possible.
I've heard that the phone will use the data lines to tell the USB charger what voltage to set. This ensures voltage compatibility. Then the phone itself regulates the current.. it will only draw as many amps as it needs. So if the PSU can handle 2A, your device may only draw 0.725a for example, but it's safe. You want a high current one to ensure the phone has all it can take.
BTW, I'm not an EE person, so double check what I said.
I fear it's not that simple, especially with dumb chargers that can't negotiate current using the USB protocol, and instead may short the data lines, in various ways, instead to tell the device what current to draw...
Sent from my GT-I9000 using xda premium
There's an explanation here of why different chargers do indeed make a difference:
http://en.wikipedia.org/wiki/Usb#Power
see in particular the note on the Battery Charger Spec.
In particular. my own testing shows I can go from 500ma to 700mA charging current simply by changing a small connector in line between the 7Ahr battery I'm using to charge the phone, and the phone. That's due to the nature of the short on the data pins.
There are proprietary tweaks to this mechanism; e.g. iPhones use voltage signalling between the two data lines and ground to indicate various things to the device.
All of this is only for "hosts", i.e. chargers etc, that don't implement the USB protocol and so can't engage in the normal current negotation that occurs when connecting e.g. the device to a PC.
Would i **** it up pluging a 5.8 volts solar charger on my phone?
projeto56 said:
Would i **** it up pluging a 5.8 volts solar charger on my phone?
Click to expand...
Click to collapse
It's a bit too high.
You have to know that slow charge = long battery life and fast charge = more battery drain after a couple of years maybe months
HdX75 said:
It's a bit too high.
You have to know that slow charge = long battery life and fast charge = more battery drain after a couple of years maybe months
Click to expand...
Click to collapse
So usb charging is better then wall charging with original charger? because i noticed that my phone hold it`s charge better if i use the wall charger.
Pezmet said:
So usb charging is better then wall charging with original charger? because i noticed that my phone hold it`s charge better if i use the wall charger.
Click to expand...
Click to collapse
Maybe because the current is higher. My battery voltage is arround 4200mV at 100% and 4100mV with USB
For the solar charger 5.8 is really high but the wall charger is ok
guys can anyone tell me what would be the reason that my Samsung j7 prime charger is giving me 4.63v instead of 5v .. the rating is 5v on the charger. is that possible the ic or some other thing is damaged? in that case what would be solution?
The other night I put my note pro on the charger with around 28% battery. After 8+ hours charging it was only at like 90%. I have been noticing pretty much every time it charges. Is there something that I am missing? I am rooted, but don't mess around with much on this tablet simply because it doesn't need much tweaking. I am using an official Samsung USB 3.0 charger with a 3ft cable. So no non-standard overly long aftermarket cable or anything either.
I am thinking of doing a factory wipe on it, maybe that could help. Hope there isn't a physical issue with it because I could see Samsung denying me because of tripped Knox...
Thanks.
Whats your standby battery drain like? If you're seeing significant drain while not charging this might be an indication of something running in the background that's reducing your charge rate too. Is charging speed improved if the tablet is powered down?
As a point of reference using GSAM Battery Monitor I see a charge rate of about 1200ma at idle with screen brightness low. You may want to try a battery monitor app such as this, perhaps it will help pinpoint the issue.
Could be the charger itself . . .
You can also go Settings - General - Bttery and tap that grey bar (where reads how long you have been running since last charge)
Then check Awake.. If there is blue bar even when your device has been longer time without any using, it tells that some app or something is not letting the device go to sleep --> which drains battery.
Have you tried your original USB cable? The stock cable is longer than 3ft
Sent from my SM-P900 using Tapatalk
Did you charge on Power Saving mode? I think, that option slow down charging
Did you turn off all running settings? (WiFi, GPS, Sync). Did you Greenify all Apps?
muzzy996 said:
Whats your standby battery drain like? If you're seeing significant drain while not charging this might be an indication of something running in the background that's reducing your charge rate too. Is charging speed improved if the tablet is powered down?
As a point of reference using GSAM Battery Monitor I see a charge rate of about 1200ma at idle with screen brightness low. You may want to try a battery monitor app such as this, perhaps it will help pinpoint the issue.
Could be the charger itself . . .
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Click to collapse
dodo99x said:
Have you tried your original USB cable? The stock cable is longer than 3ft
Sent from my SM-P900 using Tapatalk
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Thanks for pointing me to this app. I installed and will take a look at what my tablet is doing. Seems like I have been getting much lower "Screen on" times lately too. I don't recall installing anything that would do something to drain.
As for the charger, I bought the tablet from Amazon as open box. It was supposed to come with a charger but didn't. They gave me a partial refund and I bought a charger on ebay with the same model number as the stock one but it only came with a 3ft cable. I wouldn't think having a shorter cable would make a difference...
mozillaopera said:
Did you charge on Power Saving mode? I think, that option slow down charging
Click to expand...
Click to collapse
Never use power saving...
ShadowLea said:
Did you turn off all running settings? (WiFi, GPS, Sync). Did you Greenify all Apps?
Click to expand...
Click to collapse
I never turn off settings while charging. I don't feel that you should need to. I generally keep GPS off all the time anyway, I have a phone for Maps!
Thanks for the replies all! I will report back on what I find.
You likely have an application causing drain and GSAM should help you figure that out.
In addition I would suspect the charger; check the voltage and see if it's rated for 5.3V at 2.0 amps.
alias747 said:
I never turn off settings while charging. I don't feel that you should need to. I generally keep GPS off all the time anyway, I have a phone for Maps!
Click to expand...
Click to collapse
Keep in mind that turning off WiFi speeds up the charging by about 70%. And since we're talking about a device with 9500mAh...
It's fine that you feel one should not be required to do so. To each their own. Physics, however, has no interest in 'feelings' and what people think should happen. Turning off a service that uses a lot of power means it'll stop draining a large percentage of the feeded charge. Elementary physics. (Just like how a cup is filled faster if you stop drinking from it whilst filling it.)
muzzy996 said:
You likely have an application causing drain and GSAM should help you figure that out.
In addition I would suspect the charger; check the voltage and see if it's rated for 5.3V at 2.0 amps.
Click to expand...
Click to collapse
The charger that I have is model number: EP-TA10JWS
The output is rated for 5.3V and 2.0A.
I suppose there is a potential that I got a bum charger, or its a very sophisticated knock off. But the labeling all looks very legit and identical to my wifes Note 10.1 2014 charger.
ShadowLea said:
Keep in mind that turning off WiFi speeds up the charging by about 70%. And since we're talking about a device with 9500mAh...
It's fine that you feel one should not be required to do so. To each their own. Physics, however, has no interest in 'feelings' and what people think should happen. Turning off a service that uses a lot of power means it'll stop draining a large percentage of the feeded charge. Elementary physics. (Just like how a cup is filled faster if you stop drinking from it whilst filling it.)
Click to expand...
Click to collapse
So last night I tested and I TURNED OFF my tablet completely to charge. I think I had about 18% left when I put it on the charger and when I woke up about 7 hours later and turned it back on, it was at 91%. Does this sound even remotely close?
I also tested last night plugging in my charger and turning everything on the tablet off, WiFi, screen brightness all the way down, closed all open apps etc... In GSAM Battery Monitor my input was only like +800 mA. @muzzy996 you have 1200mA??? Seems like the issue must be the charger in light of my testing...
Another thing I tested though was using my wife's Note 10.1 2014 charger this morning. I believe it has the same output (5.3V / 2.0A) but I used the USB 2.0 cable that is included with it. I was only at like 650mA when charging. I think I will have to track down another charger and see if it makes a difference...
Thanks again for all the replies.
I believe there is a defect in the charging software or hardware. I used several iPad 2 car chargers rated for at least 10 watts. (5.2Volts x 2Amps) They take 5x longer to charge than the iPad. Talk about proprietary hardware/software.
The OEM charger EP-TA10JBE is rated at 5.3Volts x 2Amps. The voltage loss in the 4Ft cable supplied must be at least .1 volts, so I do not understand that the voltage difference should cause the charging rate to slow to a trickle.
I'm going to try this.
I'm having the same problem and I read the following in another thread. I'll let you know if it works for me. My charging time is not quite as slow as yours, but it's still slower than it was when I first opened the box and I've only had it less than 2 weeks.
"had the same problem after updating to 4.4.2. It only charged when off. When the device was on, it mentioned 'not charging' in the battery status, but in fact it did charge very slowly when the device was not in use, about 5% per hour.
Also when used, the battery was draining more quickly than before the upgrade.
This solved it for me:
- reboot in recovery mode (hold volume up, button and power while booting)
- clear cache partition
- reboot.
Looks like something in the cache is causing the system to consume (almost) more power than is supplied by the adapter..."
Working better
After clearing the system cache, the charge speed went up to about 22% per hour with the tablet shut off. Seems to be huge improvement in my case. I used the cable that came in the box with tablet.
The standard note 12.2 charger: EP-TA10JWS, The output is rated for 5.3V and 2.0A.
My Galaxy Note Edge has fast charging and regular charging capability. 2 outputs; 9.0V - 1.67A or 5.0V - 2.0A
Has anyone tried this/a fast charger with the note 12.2 ? Will it work ?
Probably not as it doesn't have the fast charging capability, but worth asking the tech savvy people out there.
Besides for travelling purposes it would be great just to carry one charger instead of 2.
globalgpj said:
The standard note 12.2 charger: EP-TA10JWS, The output is rated for 5.3V and 2.0A.
My Galaxy Note Edge has fast charging and regular charging capability. 2 outputs; 9.0V - 1.67A or 5.0V - 2.0A
Has anyone tried this/a fast charger with the note 12.2 ? Will it work ?
Probably not as it doesn't have the fast charging capability, but worth asking the tech savvy people out there.
Besides for travelling purposes it would be great just to carry one charger instead of 2.
Click to expand...
Click to collapse
Correct it will not fast charge, it needs both the fast charging supporting device and charger to work.
muzzy996 said:
Correct it will fast charge, it needs both the fast charging supporting device and charger to work.
Click to expand...
Click to collapse
Did you mean, "will not"?
globalgpj said:
Did you mean, "will not"?
Click to expand...
Click to collapse
Sorry yes, corrected.
Dont forget it has a 9500mAh battery. The Note 3 has 3200mAh and charges from 0 to 100 in 90 minutes. So you'll always be looking at at least 4-5 hours.
If you leave your connections(Wifi, gps, mobile data, etx), sync and apps running, don't complain that it takes ages to charge.
Fast Charge pre-S6 is Qualcomm tech. The new Exynos chips support their own Fast Charge, but that doesn't apply to the old Exynos devices.
The Snapdragon NotePro's have Qualcomm Fast charge. (Which is not the same as the one in the S6)
The Exynos devices do not. So the P900 will always be slower in charging than the P905.
If you have a p900 and it's slow to charge, that's why.
globalgpj said:
The standard note 12.2 charger: EP-TA10JWS, The output is rated for 5.3V and 2.0A.
My Galaxy Note Edge has fast charging and regular charging capability. 2 outputs; 9.0V - 1.67A or 5.0V - 2.0A
Has anyone tried this/a fast charger with the note 12.2 ? Will it work ?
Probably not as it doesn't have the fast charging capability, but worth asking the tech savvy people out there.
Besides for travelling purposes it would be great just to carry one charger instead of 2.
Click to expand...
Click to collapse
I tried mine with a 15V charger from my TF700T, and it didn't make any difference.
You can use the Note Edge charger, it also supplies normal levels for ordinary charging. I often use my Note 3 charger.
Sent From My Samsung Galaxy Note 3 N9005 Using Tapatalk
ShadowLea said:
You can use the Note Edge charger, it also supplies normal levels for ordinary charging. I often use my Note 3 charger.
Click to expand...
Click to collapse
I don't know the output of your charger but the correct one should have 5.3 Volts, 2 Amps output. Using other chargers which has lower output such as 1 Amp will cause a longer time to charge.
In order to verify which one is at fault, everyone should have this tool, no more guessing when you can see the voltage and charging current .
http://www.ebay.com/sch/i.html?_fro...TRS0&_nkw=usb+voltage+current+tester&_sacat=0
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You should swap one by one, using a known working charger and cable to verify which one is the source of problem. Start in order: charger, USB cable, USB port until problem solved.
If the reading is not 5.3 V, 1.7A, something is wrong with your charger, USB cable. or USB charging port ( new one is only around $12 ). When near full charged, current should be under 1 Amp.
http://www.ebay.com/itm/Samsung-Gal...228?pt=LH_DefaultDomain_0&hash=item234b3e01b4
Beut said:
I don't know the output of your charger but the correct one should have 5.3 Volts, 2 Amps output. Using other chargers which has lower output such as 1 Amp will cause a longer time to charge.
Click to expand...
Click to collapse
The Note 3, TabPro and NotePro chargers are identical. They have literally the same EAN and product code. The only thing that varies is the cable.
I don't have any 1A chargers anymore, they're useless to me these days. Even all my car chargers are 2.1A.
I have found Mi 4C's charging current quite bizarre, more so than what was shown in: http://forum.xda-developers.com/mi-4c/general/xiaomi-mi-4c-charging-analysis-part-1-t3209028
I don't have fancy equipment so I just downloaded the Ampere app to test the charging current. While the app is not meant to be an accurate measure of the current, I find its result quite consistent with the charging time that I obtain. (My Mi 4C is running TS CM13.)
Results:
1. Original charger + original cable = 4.41V/1220mA
Not sure if the voltage measurement is correct. I thought it would be 9V as indicated in the post which I link to above. But at least the current is quite consistent with what the others have got. It takes around 2 hours for an full charge.
2. Computer USB 2.0 port + original cable = 4.24V/250mA
It takes forever to charge. I have no idea why the current is so low. The same USB port is able to output 450mA on another phone.
3. Original Charger + 3rd party cable = 4.21V/170mA
I have no other USB Type-C device so I can't test if the cable is functioning properly. But this is just weird.
4. Portable Charger (5V/1A output) + original cable = 4.36V/860mA
This feels normal.
So I have two questions:
1. Why is charging through computer USB port so slow? I have selected "Charging only", not running any ADB.
2. Can Mi 4C work well with 3rd party cables?
It would be great if you could share your charging experience with Mi 4C. Thanks in advance.
I think the thing with Ampere is, it needs to have your screen on to measure. And it doesn't really measure the current, it takes the average charge rate of your battery and converts that to Amperes based on your total battery capacity (that is why it takes a few seconds to show). So whatever you read in ampere is your net charge rate, not what the charger is providing (whatever is draining your battery is included in the equation, your screen will be the biggest drain, you can test this with the brightness).
So that is why your usb charging looks like it's at half rate, it is probably 450-500 when the screen is off.
The 4c works well with 3rd party cables, provided they are not faulty of course. After all, the original cable is also just a transformed usb 2.0
The phone will basically never pull more power than it can handle. The charger however could be damaged if it's coupled with a bad cable and a device that draws more power.
legacyofthevoid said:
I have found Mi 4C's charging current quite bizarre, more so than what was shown in: http://forum.xda-developers.com/mi-4c/general/xiaomi-mi-4c-charging-analysis-part-1-t3209028
I don't have fancy equipment so I just downloaded the Ampere app to test the charging current. While the app is not meant to be an accurate measure of the current, I find its result quite consistent with the charging time that I obtain. (My Mi 4C is running TS CM13.)
Results:
1. Original charger + original cable = 4.41V/1220mA
Not sure if the voltage measurement is correct. I thought it would be 9V as indicated in the post which I link to above. But at least the current is quite consistent with what the others have got. It takes around 2 hours for an full charge.
2. Computer USB 2.0 port + original cable = 4.24V/250mA
It takes forever to charge. I have no idea why the current is so low. The same USB port is able to output 450mA on another phone.
3. Original Charger + 3rd party cable = 4.21V/170mA
I have no other USB Type-C device so I can't test if the cable is functioning properly. But this is just weird.
4. Portable Charger (5V/1A output) + original cable = 4.36V/860mA
This feels normal.
So I have two questions:
1. Why is charging through computer USB port so slow? I have selected "Charging only", not running any ADB.
2. Can Mi 4C work well with 3rd party cables?
It would be great if you could share your charging experience with Mi 4C. Thanks in advance.
Click to expand...
Click to collapse
look at this!
https://forums.oneplus.net/threads/charging-analysis-between-oneplus-2-and-xiaomi-mi-4c.387573/
The AMPERE App shows you the current chargeing ampere minus the usage and no Votlage from the charger!
The app show you 4,41 V and 1220 mA that says the battery has a voltage 4,41 V that is the charge state (battery %) and the
1220 mA say that the charger charge with that speed minus the actual using (-~300mA) 1220+300=1520 mA voltage unknow
Can't really say that Ampere or any other app for that matter is accurate in measuring the charging current. I would say get an actual hardware (i know there's one that you connect to the charger) that measures charging current if you really want to test charging current that bad.
As for me I only charge my phone in 2 different ways:
1. Thru the stock wall charger. From 0-100, it takes roughly 2hrs and 20mins. Quite fast for a battery with 3080mAh. Slower when compared to other 2015 devices with quick charge 2.0 i.e. the LG G4 that charges 0-60 in 30mins vs the Mi 4c's 0-40 in 1hr. Hopefully this is just a kernel limitation which remains to be seen till Xiaomi releases the kernel source.
2. Thru my powerbank with 2A output which takes about 3hrs+ from 0 to 100
Try this app: https://play.google.com/store/apps/details?id=com.slash.electron&hl=en
I think the decision of making USB 2.0 with type-C connector is kinda faulty. I tried using my Mi Pad 2's cable which is a true type-C and the charging time is much faster. I don't want to use 4c's cable anymore.
So far the most effective combination for me has been aftermarket qc2.0 charger and factory cable. With that combo, charge times have been comparable to my moto x (2014)
Using any of my micro USB cables with a type c adapter has resulted in substantially slower charge times, regardless of charger.
I have a couple other third party type c cables coming tomorrow. Hopefully I can find another successful combination.
does it come with usb3 (+cable)?
As far as I know it's a standard USB cable with a type C end slapped on it.
sounds kinda useless
I wouldn't go so far as to say its useless. It charges the phone and allows for data transfer. Those are fairly useful things.
well, i was more relating to the nature of the cable as stated before:
leledumbo said:
I think the decision of making USB 2.0 with type-C connector is kinda faulty. I tried using my Mi Pad 2's cable which is a true type-C and the charging time is much faster. I don't want to use 4c's cable anymore.
Click to expand...
Click to collapse
anyway, i got the phone myself now and gonna try some other cables/chargers. my plan is to compare AUKEY, Blitzwolf, RAVPower and Qualcomm devices. big effort, but i have made pretty bad experiences with chargers (slow, noisy etc...)
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i have tested a new Car charges from China... QC2 and it Works very good! the Phone charges veeery fast
Gesendet von meinem Mi-4c
All,
I am a new owner of a used SM-P905V purchased on Amazon. It's a replacement for my old Note 10.1 2012 edition that died some time ago. I am curious as to what the expected behavior is with this tablet specifically pertaining to charging the device. The purchase didn't come with it's own charger so I have been using the Samsung adaptive fast charger that came with my Note 5 phone, the EP-TA20JWEUSTA model specifically. Now, my old tablet came with it's own proprietary charger and nothing I've found seems to indicate the Note Pro needs a proprietary charger.
So with the above in mind, I am trying to establish the known, expected behavior as it pertains to charging the device. I've observed that the battery will drain if I am using the tablet at anything greater than the halfway mark on the screen brightness slider but seemingly only if the device is below 100% charge when I start using it. It seems that if the device is at 100 full charge and plugged in, I can use it indefinitely while plugged in. Additionally, it seems to charge at a normal pace when it is sitting unused and plugged in.
So, is this what everyone's experience is in general? Would this indicate a need for a battery replacement? Is there a proprietary charger that would offer better charging rates? I have installed a charging monitor app and noticed that the output fluctuates greatly between 40ma and 1300ma when it's sitting idle and charging.
I have cleared the cache, which seemed to help but my expectation is that I should be able use this device while plugged in, regardless of activity/screen brightness and expect that it would charge the battery rather than drain it.
Device is full stock, unrooted.
Any insight is appreciated.
Sounds normal to me.
The problem with tablets like this is that the screen is LCD(instead of AMOLED, which would cost a fortune) and massive. Which means it uses so much power that all the charger can do while you're using it is keep it level. Lower brightness means less drain.
On top of that the hardware is also quite powerful, which drains it even further.
The original NotePro Charger is identical to the Note 3 N9005 charger and the S5 G900F charger. (I've got all three, same product number and specs.)
Also note that Qualcomm Fast Charge, which comes on the Snapdragon versions of the NotePro, requires a USB3.0 cable.
Original NotePro charger specs:
EP-TA10EWE
5.3V 2.0A
The charger that came with the Note 5(and Note 4) has a lower voltage rating, which impacts charging speed. It's 5.0V 2.0A.
(This one came with the German P905)
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Thanks for the info. Does .3v really make that big of a difference? I was using the usb 3.0 cable at first then switched to the micro usb cable that came with the phone, I thought the cable could handle it. I'll switch back tonight and try it. Do you know what the US model number is for the above charger. All of the equivalent replacements I can find on Amazon are 5.0V @ 2a.
PsycloneTW said:
All,
The purchase didn't come with it's own charger so I have been using the Samsung adaptive fast charger that came with my Note 5 phone, the EP-TA20JWEUSTA model specifically. Now, my old tablet came with it's own proprietary charger and nothing I've found seems to indicate the Note Pro needs a proprietary charger.
I have installed a charging monitor app and noticed that the output fluctuates greatly between 40ma and 1300ma when it's sitting idle and charging.
.
Click to expand...
Click to collapse
It doesn't matter if you're using 5 volts/2 Amps or 5.3 volts/ 2 Amps adapter as the charging current is almost the same: around 1.7 Amps.
However, incorrect USB charging cable will draw less current although it's USB 3 cable, so the important is buying the USB 3 cable designed for this model. It usually is larger in diameter so it can draw more current. If you get around 1 Amps, your USB cable is the wrong one unless the tablet is almost fully charged. Under 90% battery, the charging current should be around 1.7 Amps.
Here is the 5.3 volts adapter
Then I'm using 5 Volts/2 Amps adapter, the charging current is almost the same
However, the charging current is less when using the wrong USB 3 cable
So the key is buying the USB cable specifically designed for the Note Pro 12.2 inches. In above picture, the USB 3 cable is smaller in cable size which is for phone, draws only 1 Amp current. You can use the micro USB too, as charging is the same as USB 3 cable which has only faster speed for data transfer but this micro USB 2 cable must have a rate at 2 Amps, micro USB for phone only draws 1 Amp at max.
This is a micro USB charging cable
Beut said:
It doesn't matter if you're using 5 volts/2 Amps or 5.3 volts/ 2 Amps adapter as the charging current is almost the same: around 1.7 Amps.
However, incorrect USB charging cable will draw less current although it's USB 3 cable, so the important is buying the USB 3 cable designed for this model. It usually is larger in diameter so it can draw more current. If you get around 1 Amps, your USB cable is the wrong one unless the tablet is almost fully charged. Under 90% battery, the charging current should be around 1.7 Amps.
Here is the 5.3 volts adapter
Then I'm using 5 Volts/2 Amps adapter, the charging current is almost the same
However, the charging current is less when using the wrong USB 3 cable
So the key is buying the USB cable specifically designed for the Note Pro 12.2 inches. In above picture, the USB 3 cable is smaller in cable size which is for phone, draws only 1 Amp current. You can use the micro USB too, as charging is the same as USB 3 cable which has only faster speed for data transfer but this micro USB 2 cable must have a rate at 2 Amps, micro USB for phone only draws 1 Amp at max.
This is a micro USB charging cable
Click to expand...
Click to collapse
Any idea where to find an authentic USB 3.0 cable? I did buy this tablet used and it came with a usb 3.0 cable that *looks* legit in that it is noticeably heavier duty than a standard microusb cable and resembles both of the cables that you show in your pictures, you'll agree there is a very slight difference in appearance between the authentic and the non authentic USB 3.0 cable. One might only be able to tell the difference between them if they were side by side.
I have a regular microusb cable that came with my Note 5. The adaptive fast charger does output 2A. Is it a safe/accurate assumption to think that this microusb cable would be able to support 2A for the Note 12.2?
If not, can you link me to where I could purchase a cable that meets the charging requirements?
PsycloneTW said:
Any idea where to find an authentic USB 3.0 cable? I did buy this tablet used and it came with a usb 3.0 cable that *looks* legit in that it is noticeably heavier duty than a standard microusb cable and resembles both of the cables that you show in your pictures, you'll agree there is a very slight difference in appearance between the authentic and the non authentic USB 3.0 cable. One might only be able to tell the difference between them if they were side by side.
I have a regular microusb cable that came with my Note 5. The adaptive fast charger does output 2A. Is it a safe/accurate assumption to think that this microusb cable would be able to support 2A for the Note 12.2?
If not, can you link me to where I could purchase a cable that meets the charging requirements?
Click to expand...
Click to collapse
The micro USB is working fine as the USB 3 cable has the same rate of 2 Amps, it's only faster by data transfer because it's USB 3. If you're looking closely, the portion for charging of USB 3 is the same as micro USB, the other one for data. USB 3 cable is the same as micro USB for charging but its data transfer rate is 10 times faster.
Micro USB cable must be 2 Amps cable, it's usually larger than the 1 Amp cable by size.
However, if you want USB 3 cable, try this one
https://www.amazon.com/Samsung-Sync...8&keywords=usb+cable+for+galaxy+note+pro+12.2