Database Info

Charging via PC

Hi guys,
I know if you unplug a charging phone in and out a lot it kills the battery, however my question is (as this was a big battery killer on my nokia n95) if I plug my touch pro into my pc and it has charged, will it then run purely off external power?
On my n95 it would charge, use a tiny bit of power on the battery and very shortly charge again. Obviously if my battery dipped again by a whole bar id want it to kick in the charger but that was crazy.
I'd like to leave my touch pro plugged in a lot for activesynch etc and charge at the same time so it would be nice to know if it's going to kill my battery.

I find that when the battery is charged the USB power will stop charging it. I charge overnight with my PC off on USB and come back and the full charged status is on.

Your PC should be able to provide 500mA through the port if the Touch Pro requests it, however the standalone charger is rated at 1A (1000mA) so if you are worried about using your device while charging then perhaps use it with the external charger.
I see no reason why your battery wouldnt be charged adequatly by the USB port though, generally you would be using less than your are getting from the usb port.

Scribe said:
I know if you unplug a charging phone in and out a lot it kills the battery
Click to expand...
Click to collapse
erm... where did you hear that?
no it doesn't
maybe you mix it with the car ignition eating too much gas if you do it a lot?

Well, it used to be that way with the old NiCd batteries. Nowadays it's not an issue anymore.

My apologies, whilst lithium ion's don't have memory they do still lose overall power by each charge and discharge, even if it's not a complete one.

my 5 years old LOOX 720 disagrees with you

also my 5 year old HP IPAQ disagrees.
battery is as new and i charged it whenever i wanted.
same situation with my HTC Artemis, i bought it since the first day it went on sale and battery is as new!

Upquark said:
Well, it used to be that way with the old NiCd batteries. Nowadays it's not an issue anymore.
Click to expand...
Click to collapse
This issue has come up so many times ..... i post again a link to a website with details on how to maximise a li-ion batterry. It clearly states that it prefers small discharges, with full discharges in every 30 charge cycles.
http://www.batteryuniversity.com/parttwo-34.htm

Battery takes long to charge.

Been charging my phone for more than 3-4 hours now and it's still not fully charged. Its connected to my PC thru the issued USB. I don't think that's normal. Wondering if you guys are having this issue?

I've noticed that too. Don't know if the wall charger will do better. Probably not, but it might deliver more power. I'll give it a try tonight

It's a big battery, but it does take quite a long time on the wall charger, and quite a long time plus forever via USB.

A big battery but drains in a day with normal use. I though Super AMOLED was suppose to be very power conservative. I see on the battery status that the display is the main source of use.

In the Android 1Ghz world, the longevity of the Captivate battery is pretty darn good.
Just don't forget you're in the new and shiny "I just got this ****, check it out!" phase. That phase has been scientifically proven to shorten battery life by up to 80% for the first few days/weeks.

Croak said:
In the Android 1Ghz world, the longevity of the Captivate battery is pretty darn good.
Just don't forget you're in the new and shiny "I just got this ****, check it out!" phase. That phase has been scientifically proven to shorten battery life by up to 80% for the first few days/weeks.
Click to expand...
Click to collapse
if there was a quote of the week this would be it. i use my phone so much the first few weeks.

I do admit I've been playing with it so much, I just thought it would surprise me by having enough juice left by the end of the day. I just hope it charges faster than 3-5 hours.

try charging it in one of the back usb ports if your using one in the front
sometimes the front puts out less power

I agree, the battery does take an abnormally long time to charge. It sure is fun discharging it though!

why not just use a wall charger it would be waay faster wouldnt it

Wall charger is slow for me.
From my Samsung Captivate

I've found that USB charging from either the back of a computer or a "higher output" port on a laptop charges faster for me at least on my iPhone 3G.
Wall charging has always been faster for previous phones as well. Strange that this isn't the case for the Captivate

Battery Life
Croak said:
In the Android 1Ghz world, the longevity of the Captivate battery is pretty darn good.
Just don't forget you're in the new and shiny "I just got this ****, check it out!" phase. That phase has been scientifically proven to shorten battery life by up to 80% for the first few days/weeks.
Click to expand...
Click to collapse
That was the question around the office today. How's the battery life? TBH, I don't know. It's only been 24+ hours since I got the phone. I've enabled WiFi, Bluetooth, and GPS tonight to see how the battery drains.
sm3llychef said:
I've found that USB charging from either the back of a computer or a "higher output" port on a laptop charges faster for me at least on my iPhone 3G.
Click to expand...
Click to collapse
On the many previous smartphones that I have had, I've found that the wall charger gives the best charge. Charging on from a USB port can take much longer.
NOTE: You can only mount the SD card properly, if you plug it into a native USB port (the back of your pc). Can it be that native USB voltage requirement?

Charging on your PC's usb is slower than wall charging. It takes a better half of a day to charge my Cowon S9 via PC, and 1-2 hours via wall charger.

Ive also heard that it takes time to "break in" these batteries. After a week or two see if you are having the same charge times.

I've not had this problem as charging time surprised me with how quick it was. I went from 30% to full in a couple of hours. I was not expecting a message to unplug the charger when the battery got full. I am used to plugging in the charger and taking it off only when I am leaving the house. Id it a problem leaving this phone on charge? I think not but then why the message?

My phone was at 7percent at 11am and by the tIME 2am rolled around it was only at 92. 3 hours and still not a full charge? I think there is something wrong. Lol
Sent from my SAMSUNG-SGH-I897 using XDA App

jromney said:
NOTE: You can only mount the SD card properly, if you plug it into a native USB port (the back of your pc). Can it be that native USB voltage requirement?
Click to expand...
Click to collapse
I noticed that too. i was like WHY ISNT IT MOUNTING! but then i swapped to a native port on the rear and voila!

I have noticed that mine charges fine with the wall mount and slower through PC. I actually tested GPS and Nav for 4 hours while driving from out of town using the car charger. The car charger couldn't keep up and the battery was still slowly discharging.
-J Chao

On wall charger mine is taking about 7 hours to charge from 0% - 100%, and with pretty normal use it's down to 0% again in about 5-6 hours. Swapped my battery for a new one and still getting the same results. I'd like to swap out my device but there aren't any available at AT&T.

Extremely slow charging

Has anyone had a problem with extremely slow charging? I would plug my phone in and wake up 6 hours later and the phone is still not charged. It's even worse now with the extended battery. 7 hours worth of charging and I'm only at 85%. I'm rooted and using the de-bloat rom without the kernel, but it was like this even before the root. Has anyone else encountered this strange issue. I have been using the stock HTC charger.

mine charges in a couple hours using the wall charger and wifi hotspot. In the car or via computer USB, it charges very slowly and if wifi hotspot is on, it loses charger over time.

I typically turn my phone off to charge; speeds things up 2-3 fold.
Sent from my ADR6400L using XDA App

loztboy said:
Has anyone had a problem with extremely slow charging? I would plug my phone in and wake up 6 hours later and the phone is still not charged. It's even worse now with the extended battery. 7 hours worth of charging and I'm only at 85%. I'm rooted and using the de-bloat rom without the kernel, but it was like this even before the root. Has anyone else encountered this strange issue. I have been using the stock HTC charger.
Click to expand...
Click to collapse
Mine doesn't even take an hour . Power it off and try it that way and see how long it takes.

damn mine charges super fast compared to my nexus s i had

If you have plug to the computer it might take longer but not 6 hours, on the wall it only takes like an hour or two to be fully charge.
If it's an issue just take it back and get another one.

Yeah I might have to return this phone. Do you think it matters whether I use the cable that came with the phone, or a regular usb cable to charge.
Sent from my ADR6400L using XDA Premium App

You need to look at the power ratings of the adapters you're using. This behemoth phone can receive 1000ma, while many car and home chargers (like Droid1) are only rated at 500ma. I'm still trying to figure out what the power draw is on the phone when just idling (battery monitor widget is hard to understand), but if the phone draws 250-500ma with regular usage, its going to lose charge plugged into USB (rated at 500ma per port) and running hotspot (drawing closer to 600ma). That's -100ma.
These numbers are guesstimates. I'm not sure if the cable itself can pose limitations, but would suspect that as long as there's no shorts in the wire, it would be able to handle any of the above currents.

fronc said:
You need to look at the power ratings of the adapters you're using. This behemoth phone can receive 1000ma, while many car and home chargers (like Droid1) are only rated at 500ma. I'm still trying to figure out what the power draw is on the phone when just idling (battery monitor widget is hard to understand), but if the phone draws 250-500ma with regular usage, its going to lose charge plugged into USB (rated at 500ma per port) and running hotspot (drawing closer to 600ma). That's -100ma.
These numbers are guesstimates. I'm not sure if the cable itself can pose limitations, but would suspect that as long as there's no shorts in the wire, it would be able to handle any of the above currents.
Click to expand...
Click to collapse
yeah i find it impossible to charge the thing on USB, and it takes forever plugged into the wall with the charger it came with.
Had an evo, and it would almost full charge (from the time it said to plug it in, so 15%) in about an hour and a half. The thunderbolt seems to take 3 hours ish for me. I know I can turn the phone off, but since it usually charges over night its not a big deal, I just think it is interesting that it is so different.

yeah I'm one of the folks who charges FAST. It has really surprised me...I actually thought everyone was charging super fast until this thread.

fronc said:
You need to look at the power ratings of the adapters you're using. This behemoth phone can receive 1000ma, while many car and home chargers (like Droid1) are only rated at 500ma. I'm still trying to figure out what the power draw is on the phone when just idling (battery monitor widget is hard to understand), but if the phone draws 250-500ma with regular usage, its going to lose charge plugged into USB (rated at 500ma per port) and running hotspot (drawing closer to 600ma). That's -100ma.
These numbers are guesstimates. I'm not sure if the cable itself can pose limitations, but would suspect that as long as there's no shorts in the wire, it would be able to handle any of the above currents.
Click to expand...
Click to collapse
+1 on looking at your adapter. Use the one that comes with the phone or make sure that it's rated at 1000mA/1A or more. I tried a MicroUSB adapter I had lying around that came with a bluetooth headset; turns out it only puts out 200mA, so the phone would take forever to charge on it.

ufmace said:
+1 on looking at your adapter. Use the one that comes with the phone or make sure that it's rated at 1000mA/1A or more. I tried a MicroUSB adapter I had lying around that came with a bluetooth headset; turns out it only puts out 200mA, so the phone would take forever to charge on it.
Click to expand...
Click to collapse
with an output of 200mA I would be amazed if you could get this phone to charge at all, without having a custome kernel and underclocking the processor. If anything I would see it maybe staying same battery percentage.

Overall I feel this phone does charge really slow. It is way slow charging on a computer. I was charging it and just doing some light texting and after 4 hours the battery only went up by like 25%.
I have a second wall charger rated at 1000mAH, and after 30min it went up like 10%. This was with the phone off btw. With it on, but not in use, it went up like 4% over 30min. I'm kind of surprised how long it takes to charge. I've had no problems charging it at night. Plug it in before bed, and its full when I wake up. How does the 1400mAH battery size compare to other phones?
I did a little math too, the battery is a 5.18 W/hr battery. So with a 1AH charge at 5V, you'd expect the phone to charge in 2 hrs if only about 50% of the electricity is getting retained by the battery.

I've noticed that mine takes about 1hr 45ish mins to charge from completly dead. My Droid used to be an hour at the most.

i just checked on the adapter it came with, it's 200 mA...did people get better chargers than me or something? Mine takes forever to charge also...been stuck at 99% for 30 mins
EDIT: nvm, i was looking at input, not output...still isnt moving from 99% to 100% though

jbh00jh said:
Mine doesn't even take an hour . Power it off and try it that way and see how long it takes.
Click to expand...
Click to collapse
WTF are u talking about 0-100% or like 70-100%?

lorijuan1024 said:
damn mine charges super fast compared to my nexus s i had
Click to expand...
Click to collapse
@lorijuan1024 im with you man the Nexus S took forever...... To charge

its impossible for me to charge it through the computer, it went up 5% over 3 hours, wasnt on hotspot, sending texts.

Mine charges fine on anything, I am using my old fascinate charger.

Charging speed seems to fluctuate for me... sometimes I get lucky and its fast. Other times, not so much.

Battery Care P3110...

Hello Guys!
I got today a new P3110 and I discacharged it to 2% and I plugged it now to load.
I have seen the charger pushes 2A @ 5V , this is pretty much for a battery of 4Ah, I know from my batteries ( AA AAA and others) that the charging current should be max. 1/3 of the capacity of battery.
So my question is: IS it better to charge it with the Samsung Galaxy S2 charger which provides only 0,[email protected],1V ?
It would last app. 6h to charge it till its full ( can be done over night, hopefully the charger wont melt)....
What do you think about that? Woul it harm to battery(li poly) to do it with small current?
cheers

If the charger seems much then tell me why Samsung made it.

Luigi2012SM64DS said:
If the charger seems much then tell me why Samsung made it.
Click to expand...
Click to collapse
to destroy the battery faster, through much more currency than actually needed, so you have to buy a new one....

sh0ne said:
to destroy the battery faster, through much more currency than actually needed, so you have to buy a new one....
Click to expand...
Click to collapse
You have got to be kidding me. ITS SO THE TAB CHARGES FASTER. IT WON'T KILL THE BATTERY!!!!

Its because the tab has a much bigger battery 4000mah vs 16xxmah.
It charges it faster

MrAndroid12 said:
Its because the tab has a much bigger battery 4000mah vs 16xxmah.
It charges it faster
Click to expand...
Click to collapse
Of couse it charges faster, but for long therm it will kill the battery faster. Its usual, like every battery. Every fast charger is not good for battery, I just wanted to know if somebody have a expieriance...

sh0ne said:
Of couse it charges faster, but for long therm it will kill the battery faster. Its usual, like every battery. Every fast charger is not good for battery, I just wanted to know if somebody have a expieriance...
Click to expand...
Click to collapse
Battery life span is a matter of charge cycles 0%-100%-0%. That is 1 cycle and surely batteries don't discharge to 0% not charge fully to 100%

-AFAIK- Even with lithium, Its the heat build up when "fast" charging that shortens any battery life - (same with fast discharging- I would never use those apps that do so) , so I agree with shOne. I have the same model & have noticed the battery does get quite hot when mains charging,( though have never thought to check charging AH).
I would imagine that the only damage you would do with using phone charger would be to the charger, by sucking out more than it can handle, not the battery ! -
-- But why not charge it via a pc usb port - this take a lot longer (so presume much lower AH) than the mains plug in charger - Most usb pc ports are nowadays - permanently live, even when pc off - same with the usb on a modern sky/virgin box. My battery does not get hot, charging this way. I dont know what the charge rate is charging this way ,because both the inbuilt notification & my battery app say "discharging" - (although actually charging)
(I agree that Samsung have provided a quick mains charger, and wouldnt be averse to selling replacement batteries earlier than would otherwise be neccessary, !! (I wouldnt use cheap replacement batteries in any I.T. stuff - I "blew up " a laptop once as a result!!)

I believe that the 2 amp charge is reasonable with the out put of most lithium batteries for this type of device. Since it is a lithium it will not be overcharging or over heating due to sensing, it would be a serious fire hazard... fyi I use a2 amp charger from Wal-Mart and I do not notice my device really heating up...
Sent from my GT-P3110 using xda app-developers app

Buff52 said:
-AFAIK- Even with lithium, Its the heat build up when "fast" charging that shortens any battery life - (same with fast discharging- I would never use those apps that do so) , so I agree with shOne. I have the same model & have noticed the battery does get quite hot when mains charging,( though have never thought to check charging AH).
I would imagine that the only damage you would do with using phone charger would be to the charger, by sucking out more than it can handle, not the battery ! -
-- But why not charge it via a pc usb port - this take a lot longer (so presume much lower AH) than the mains plug in charger - Most usb pc ports are nowadays - permanently live, even when pc off - same with the usb on a modern sky/virgin box. My battery does not get hot, charging this way. I dont know what the charge rate is charging this way ,because both the inbuilt notification & my battery app say "discharging" - (although actually charging)
(I agree that Samsung have provided a quick mains charger, and wouldnt be averse to selling replacement batteries earlier than would otherwise be neccessary, !! (I wouldnt use cheap replacement batteries in any I.T. stuff - I "blew up " a laptop once as a result!!)
Click to expand...
Click to collapse
Agreed. The worst I got was a cheap replacement off a street without a packaging for a dollar. When I plugged it in for a few minutes the battery turned extremely hit and the battery expanded as if it was a puffer fish that took an electric shock

"Agreed. The worst I got was a cheap replacement off a street without a packaging for a dollar. When I plugged it in for a few minutes the battery turned extremely hit and the battery expanded as if it was a puffer fish that took an electric shock"
--------
LOL.........mine was a supposed "genuine" DELL replacement battery I got on EB from HK. On the first charge (in the bedroom) heard a strange hissing then a loud "pop". Some of the underside casing was actually melted and there was battery gunge all over the internals!

Buff52 said:
"Agreed. The worst I got was a cheap replacement off a street without a packaging for a dollar. When I plugged it in for a few minutes the battery turned extremely hit and the battery expanded as if it was a puffer fish that took an electric shock"
--------
LOL.........mine was a supposed "genuine" DELL replacement battery I got on EB from HK. On the first charge (in the bedroom) heard a strange hissing then a loud "pop". Some of the underside casing was actually melted and there was battery gunge all over the internals!
Click to expand...
Click to collapse
A lot of things I bought from Hong Kong off Ebay actually came from mainland China pfff.....
It's those low quality defects they send you. Mass market goods in china doesn't require quality passes unlike Hong Kong where it's illegal once they get pass customs.

sh0ne said:
Hello Guys!
I got today a new P3110 and I discacharged it to 2% and I plugged it now to load.
I have seen the charger pushes 2A @ 5V , this is pretty much for a battery of 4Ah, I know from my batteries ( AA AAA and others) that the charging current should be max. 1/3 of the capacity of battery.
So my question is: IS it better to charge it with the Samsung Galaxy S2 charger which provides only 0,[email protected],1V ?
It would last app. 6h to charge it till its full ( can be done over night, hopefully the charger wont melt)....
What do you think about that? Woul it harm to battery(li poly) to do it with small current?
cheers
Click to expand...
Click to collapse
OK, electronics 101, chargers DO NOT PUSH power to a a battery, 2 AMPS is the chargers MAXIMUM OUTPUT, the device plugged to the charger PULLS what it wants (up to a maximum of 2A of current) so it can charge in a reasonable amount of time, you may be able to charge your tablet with a lower output charger but all it would do is take longer to charge (if the charger even had the power output greater then the static draw of the device), which is why most tablets simply CANNOT be charged by the USB 2.0 port on a computer or other small .5 A output chargers. You may very well charge while generating less heat, because of the slower charge cycle using the .7A S2 charger, but at the same time if you try to use the tablet while it's charging on the smaller charger it may very well drop in battery percentage as the smaller charger may not be enough to maintain the current requirements to charge the battery and run the device.
So in short, would charging with the smaller charger harm the battery, NO, but if it is enough to actually charge the device it will take atleast DOUBLE the amount of time to recharge as it would with the regular 2A charger.

over 25 hours to charge note 10.1 ?

Hi I just bought a used galaxy note 10.1
it did not come with a usb wall charger
after 7 hours of charging
a search said its my usb charger
I was wounding if it is normal for this to take over 24 hours from 0% battery on a charger like this
that only gives 0.5 A
or am I doing damage to my battery by leaving on charge for longer than 24 hours
its like a incredibly slow trickle charge
right now its almost full it claims but im not sure if it will ever be full at this rate
I thought maybe 24 hours but now its 1 hour past 24
I was trying to (calibrate the battery )
so I let it die to 0%
I turned the device on half way though charging
noticed it had an x though the batter so I freaked out and tryed plugging and unplugging it like 10 times
I was wounding how bad that might be for the memory of my battery to do something like that
because I unplugged it before it got to 100% when i was attempting to calibrate it
Im not sure how sensitive these batteries are
but your input would be much appreciated

You could use an off brand iPad charger with your USB cable to help it charge faster your typical phone charger will only give off 0.5 ma, so look for one for a tablet
Sent from my SM-P905 using Tapatalk

only one thing to your problem with charging, replace the new one usb cable and your problem will be solving

rohmanch said:
only one thing to your problem with charging, replace the new one usb cable and your problem will be solving
Click to expand...
Click to collapse
I know that but I was wondering if leaving it plugged in will it be bad for my battery at all
to leave it plugged in now approaching 28 hours
the charging logo on the screen appears to have approximately 75% charge so far
I want it to get to 100%
should I unplug it if its not charged in 6-8 more hours
im mainly wondering if it is even possible to fully charge to 100%
on a old ipod usb charger or not

kush king710 said:
Hi I just bought a used galaxy note 10.1
it did not come with a usb wall charger
after 7 hours of charging
a search said its my usb charger
I was wounding if it is normal for this to take over 24 hours from 0% battery on a charger like this
that only gives 0.5 A
or am I doing damage to my battery by leaving on charge for longer than 24 hours
its like a incredibly slow trickle charge
right now its almost full it claims but im not sure if it will ever be full at this rate
I thought maybe 24 hours but now its 1 hour past 24
I was trying to (calibrate the battery )
so I let it die to 0%
I turned the device on half way though charging
noticed it had an x though the batter so I freaked out and tryed plugging and unplugging it like 10 times
I was wounding how bad that might be for the memory of my battery to do something like that
because I unplugged it before it got to 100% when i was attempting to calibrate it
Im not sure how sensitive these batteries are
but your input would be much appreciated
Click to expand...
Click to collapse
You are not harming your device. The only negative is that it will take longer to charge. The red is normal when not using either the correct type charging block or usb cable, it is not harming your tablet.
I would just do what some of the other posters have suggested, getting a new charger made for a tablet, just because waiting that long for it to charge is not practical.

kush king710 said:
I know that but I was wondering if leaving it plugged in will it be bad for my battery at all
to leave it plugged in now approaching 28 hours
the charging logo on the screen appears to have approximately 75% charge so far
I want it to get to 100%
should I unplug it if its not charged in 6-8 more hours
im mainly wondering if it is even possible to fully charge to 100%
on a old ipod usb charger or not
Click to expand...
Click to collapse
SGN 10.1 GT-N80XX series need a specifically designed charger for them.
One thing for sure, it need to provide 2.1 A, 5 V & most phone charger only supply around 0.5 - 1 A.
Most 3rd party charger also only supply around 0.5 - 1 A.
The other is the data pin(s) & it quite different with Apple's charger.
I've tried several 3rd party chargers & Apple chargers (iPod,iPhone & iPad) & most of it unable to charge my N8000.
You need to buy an original charger for your device.
Or you can try buying 3rd Party N80XX charger on eBay from a reputable seller.
That being said, you also need an original cable to be used with the original charger.
Most 3rd party cable can only supply 0.5 A & some 3rd party charger can only be used using specific 3rd party cable.
A long 3rd party cable (10 ft / 3 m) usually can only supply around 1 A.
For example :
I have a Powerbank that uses its own cable to charge at 2.1A rate, but I can't use my own original cable with it
But my original cable is fine & I uses it to charge using my original wall charger.
It takes around 4-5 hours from 4% to 100% (with WiFi ON & all sync on)
0.5 A can't charge your device while in Power ON condition.
To charge at 0.5 A rate you have to turn OFF your device & it will take a long time to get 100%
(N80XX series have a 7000mAh battery so you can calculate how long).
NOTE:
The battery with red cross icon means that the charger/cable isn't designed for N80XX (usually the data pin settings is mismatching the original design), but it will still charge your device at a very low amperage (lower than 0.5A) to prevent damage for using inappropriate charger.

rtan73 said:
You are not harming your device. The only negative is that it will take longer to charge. The red is normal when not using either the correct type charging block or usb cable, it is not harming your tablet.
I would just do what some of the other posters have suggested, getting a new charger made for a tablet, just because waiting that long for it to charge is not practical.
Click to expand...
Click to collapse
yes I will as soon as I can
thank you
I am still a little worried that It will never make it to 100% with the only one I have available for now
does not really sound like anyone has had the patience to let it go to full with this slow trickle

Amazon has the chargers and cables.
Sent from my GT-N8013 using Tapatalk