Mi 4C Charging Current (simple test) - Xiaomi Mi 4C

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

Related

5v 1000mA charger

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.
Click to expand...
Click to collapse
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 ?
Click to expand...
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

[Q] Voltage on unofficial micro USB charger

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?

Battery charging rate

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.
Click to expand...
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
Click to expand...
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]
Click to expand...
Click to collapse
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.
Click to expand...
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]
Click to expand...
Click to collapse
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%?

Xiaomi's latest 10000mAh power bank offers USB Type-C for $22

http://www.androidcentral.com/xiaomis-latest-10000mah-power-bank-offers-usb-type-c-22
And the big Q... will it rapid-charge the Nexus-6P.... anyone?
I´m not sure if this Power Bank can charge the Nexus 6P fast ( 5V @ 3A ). I´ve tested a iVoler 10000mAh USB Type C Power Bank before and this one works great with the Nexus 6P.
The Xiaomi is much much smaller...
Quick Specs:
Input Voltage : 12V/9V/5V
Output Voltage : 12V/9V/5V
Input Current : 12V 1.5A/9V 2A/5V 2A(TYP)
Output Current : 10180mAh/39.19Wh(TYP)
Rated capacity : 3.6V/10000mAh(TYP)
Size : 128.5*75*12.6mm
Load detection : Auto-detect the plug-in and plug-out of devices
Weight : 223g
Click to expand...
Click to collapse
seems like it could only charge at 2A for 5V
Ramelush said:
http://www.androidcentral.com/xiaomis-latest-10000mah-power-bank-offers-usb-type-c-22
And the big Q... will it rapid-charge the Nexus-6P.... anyone?
Click to expand...
Click to collapse
No. I just received it today, and the usb-c interface is for charging the battery only. The legacy USB interface is said to support fast charging, but it didn't when I connected it to my Nexus 6P; it charged the phone at normal speeds.
I suspect the advertising around "bi directional usb-c" means simply you can plug the cable in both ways, and "fast charging" means you can charge the *battery* quicker.
In fact, if you connect the battery and a Nexus 6P via a usb-c cable, the phone starts charging the battery!
trammel said:
In fact, if you connect the battery and a Nexus 6P via a usb-c cable, the phone starts charging the battery!
Click to expand...
Click to collapse
This is true on many (all?) batteries that allow you to both charge or discharge on the Type-C port. You might have to push the power button for the phone to start charging. What happens if you unplug the Type-C cable, push the power button on the battery, and then plug the Type-C cable back in? Does the phone start drawing power from the battery instead of charging the external battery?
IF the phone starts charging itself from the external battery, can you please let us know how much power is being delivered per the Ampere app? I'd be curious to know this. I couldn't find anything on Xiaomi's web site that gave a definitive output current number.
Pbrah said:
This is true on many (all?) batteries that allow you to both charge or discharge on the Type-C port. You might have to push the power button for the phone to start charging. What happens if you unplug the Type-C cable, push the power button on the battery, and then plug the Type-C cable back in? Does the phone start drawing power from the battery instead of charging the external battery?
IF the phone starts charging itself from the external battery, can you please let us know how much power is being delivered per the Ampere app? I'd be curious to know this. I couldn't find anything on Xiaomi's web site that gave a definitive output current number.
Click to expand...
Click to collapse
Nope, pressing the button on the battery makes no difference (before or after being plugged in to the phone). The USB-C port is purely for charging the battery, not for using the battery to charge other devices.
I've attached a scan of the booklet that came with the battery. You'll need to read Chinese (I can't) to understand it though. 2 colleagues have told me it explicitly says only the legacy USB port can be used to charge other devices.
trammel said:
Nope, pressing the button on the battery makes no difference (before or after being plugged in to the phone). The USB-C port is purely for charging the battery, not for using the battery to charge other devices.
I've attached a scan of the booklet that came with the battery. You'll need to read Chinese (I can't) to understand it though. 2 colleagues have told me it explicitly says only the legacy USB port can be used to charge other devices.
Click to expand...
Click to collapse
That stinks. Thanks a lot for the heads up, I was considering buying one to compare to the Orico battery.
the part that says USB接口(输出) means USB port(output)
the Type C接口(输入) means Type C port(input)
trammel said:
No. I just received it today, and the usb-c interface is for charging the battery only. The legacy USB interface is said to support fast charging, but it didn't when I connected it to my Nexus 6P; it charged the phone at normal speeds.
I suspect the advertising around "bi directional usb-c" means simply you can plug the cable in both ways, and "fast charging" means you can charge the *battery* quicker.
In fact, if you connect the battery and a Nexus 6P via a usb-c cable, the phone starts charging the battery!
Click to expand...
Click to collapse
Boo!
Sent from my Nexus 6P using Tapatalk
Argh... I wish I read this thread before I purchased this. I can confirm that the USB C does not output a charge. Really disappointed as all the reviews I've read led me to believe the USB C port was both an input and output. I've attached a screenshot of what I'm getting per Ampere. Oh, and I know this is in the Nexus 6P thread, but I'm actually using this with my Nexus 5X.
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I cant find the Xaiomi on any website
I fell for the same ****. I got mine today for $60 AUD, the only reason i paid that is there is no power banks in Australia that support USB-C. The USB-C port is only for charging the power bank, you can also charge the power bank using your phone. Xiaomi mi 10000mah doesn't rapid charge.
Sent from my SM-T325 using XDA-Developers mobile app
I'd assume so, Chinese only instructions. I'm on a tab at the moment, can't view the pic.
Sent from my SM-T325 using XDA-Developers mobile app
Hi guys, sorry for the UP but I bought the power bank today and I run into your same issues.
I saw a video (in bangladeshian, LOL) that actually from Type C port you can fast-charge the Nexus 6P, and also if the phone is off, it starts to get fast-charged by the battery via USB-C.
So basically, is there a question to disable "Nexus power output"? This way the USB quick charging should work fine.
kattara said:
Argh... I wish I read this thread before I purchased this. I can confirm that the USB C does not output a charge. Really disappointed as all the reviews I've read led me to believe the USB C port was both an input and output. I've attached a screenshot of what I'm getting per Ampere. Oh, and I know this is in the Nexus 6P thread, but I'm actually using this with my Nexus 5X.
Click to expand...
Click to collapse
Damn , maybe because it's usb a to C , so the Ampere really low
This powerbank looks quite nice but it doesn't support USB Type-C Fast Charging. It only supports 2.0A output so it won't charge the Nexus 6P or 5X at full speed . Looks like I'm gonna be looking elsewhere.
The usb-c port is for charging the power bank only. It does not rapid charge.
Sent from my SM-T320 using XDA-Developers mobile app
According to people in this reddit post it quickly charges the Nexus 6P if you use a different cable than the one it ships with. Only from the USB-A port though.
https://www.reddit.com/r/nexus5x/comments/49xj4c/just_got_my_hands_on_the_xiaomi_10000mah_mi_power/
I bought one as well.
It does NOT charge via the USB C port, it is only an input port.
So no quick charging with it unfortunately.

How to charge with PD 27W?

On xda site they said the OP8T can charge up to 27W with a PD charger however I tried many PD chargers with all kind of cables combination and it never goes above 1-5W.
I'm not the only one, there are many posts on reddit about this.
What's your experience on this?
Same over here, can't get it over 5w.
Charging voltage has something to do with it, what's ur charging voltage?
Using a digital usb meter I noticed all PD chargers stay a 9V with 0.45A output. I tried a kernel on XDA that it's supposed to force fast charging but i didn't do anything.
I find it very weird nobody is talking about this on XDA, only a few threads on reddit.
If you are outside and you don't have your stock OP 65W charger with you you have a high possibility of not being able to charge at all since it can take 5 hours to a day a this speed. How is this even legal?
-sandro- said:
I find it very weird nobody is talking about this on XDA, only a few threads on reddit.
If you are outside and you don't have your stock OP 65W charger with you you have a high possibility of not being able to charge at all since it can take 5 hours to a day a this speed. How is this even legal?
Click to expand...
Click to collapse
I may be a little confused here, but I get pretty dang close to 27W of charging power when using my USB C charging brick that came with my Samsung Galaxy Book 360. Franco kernel manager usually says I average around 25W charging power. I'm assuming the USB brick is USB-C with PD.
azoller1 said:
I may be a little confused here, but I get pretty dang close to 27W of charging power when using my USB C charging brick that came with my Samsung Galaxy Book 360. Franco kernel manager usually says I average around 25W charging power. I'm assuming the USB brick is USB-C with PD.
Click to expand...
Click to collapse
HI,
First of all (I'm using a usb tester) I noticed the cable has nothing to do with this problem. I have one BaseUS 100W PD charger, one UGreen 36W PD charger, one BaseUS 65W power bank and one 18W power bank. They are all able to provider PD charging at 12/20V at their maximum advertise wattage with my devices and a usb-c laptop. They can also provide 9V/3A (tested).
I noticed then when the battery is below 60% connected with a usb-c cable they all default to 9V/0.45A and sometimes even 0.22A (last night I left it to charge and in 8h it only charged 7%!) when above that you can get 5V/2.5A which is much better.
So I'm not sure what exactly those PD chargers are missing if they work with all other devices.
Also I find it weird you can see 25W from franco kernel since the phone shows half of the wattage being a dual battery. So yhat would be a real 50W.
Connected to a 100W PD charger at 1W
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-sandro- said:
Connected to a 100W PD charger at 1W
View attachment 5527929
Click to expand...
Click to collapse
Latest OOS?
Yes of course.
Bro, something is wrong.... I just tested my google chromecast with google tv power block and cable and I am getting this:
I'm sorry what is the link of this charger?
-sandro- said:
I'm sorry what is the link of this charger?
Click to expand...
Click to collapse
I don't know exactly, whatever google uses for this: https://store.google.com/us/product/chromecast_google_tv?hl=en-US
It's a 5V 1.5A so that value you see in FKM cannot be real.
You should use BatteryGuru and multiply by 2.
-sandro- said:
It's a 5V 1.5A so that value you see in FKM cannot be real.
You should use BatteryGuru and multiply by 2.
Click to expand...
Click to collapse
Well I guess this block is different. It says 5V 3A or 9V 2A, so 18W would make sense no? I'll try a different app. This is from the battery guru app and electron app:
Yes makes sense now. I'll try to find other chargers at this point. I know everything I have is not supported by this phone.
It's like u can't find a compatible charger lol whatever charger I tried charges at 9v 1.8a until the phone reaches 65% and then it drops to 4.5v 0.4a and it takes ages to get from 65% to 100%
Idk what the hell is this problem but I know for sure it's their dual battery design messed up for real
Could anyone try monitoring charging voltage and amperage across different charging percentages and report back.
And for monitoring use OnePlus toolkit it's baked in the rom, *#800# to access it then tap on enter and tap on tools to see charger option and then choose it.
It displays the voltage and current without having to multiply it.
There was a thread at OP forums about this issue.
OnePlus Community
Introducing our new OnePlus Community experience, with a completely revamped structure, built from the ground-up.
forums.oneplus.com
I suppose the problem is also in the technology itself:
In contrast to USB Power Delivery and Qualcomm Quick Charge technology, which increases the voltage during fast charging, VOOC/Warp Charge/Dart Charge use a higher current than standard USB charging.
All versions of VOOC require a proprietary cable to work. In addition to electrical requirements like thickness (low electrical resistance) to handle the high currents without overheating, the VOOC 2.0/Dash protocol requires a fifth pin on the (USB-A to USB-C) cable to communicate through. Without such communication, the charger runs at a limit of 5 V/1.5 A. From VOOC 4.0 this limit elevated to 5V/2.0A.
On the Android phone end, the VOOC communication code is open source under GNU General Public License (GNU GPL) version 2 as a part of the modified Linux kernel, and has been used by custom ROMs like Lineage OS.
So i presume it's just not compatible with many PD chargers.
Oppo Gan Charger Kit supports 65W charging protocol,You can buy it about 80-90RMB on the Xianyu app 。There is also a power bank that supports 65W charging called Sdoutech but a little expensive , 400RMB/26800mah about four times for 8T
Mainly I want to charge with other chargers and power banks I already have not buying other VOOC chargers.
Rootk1t said:
There was a thread at OP forums about this issue.
OnePlus Community
Introducing our new OnePlus Community experience, with a completely revamped structure, built from the ground-up.
forums.oneplus.com
I suppose the problem is also in the technology itself:
In contrast to USB Power Delivery and Qualcomm Quick Charge technology, which increases the voltage during fast charging, VOOC/Warp Charge/Dart Charge use a higher current than standard USB charging.
All versions of VOOC require a proprietary cable to work. In addition to electrical requirements like thickness (low electrical resistance) to handle the high currents without overheating, the VOOC 2.0/Dash protocol requires a fifth pin on the (USB-A to USB-C) cable to communicate through. Without such communication, the charger runs at a limit of 5 V/1.5 A. From VOOC 4.0 this limit elevated to 5V/2.0A.
On the Android phone end, the VOOC communication code is open source under GNU General Public License (GNU GPL) version 2 as a part of the modified Linux kernel, and has been used by custom ROMs like Lineage OS.
So i presume it's just not compatible with many PD chargers.
Click to expand...
Click to collapse
I don't understand why it can't be compatible with many PD chargers if PD is a standard. What would be the discrimination factor here?
I tried charging the Pixel 6 that supports PD with every PD charger I have and they all deliver 23W, while on the OP8T all stuck on 5W or even less sometimes.

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