Database Develop

[Q] Battery life question

I've read a few threads regarding battery life but none seem to address my problem. I have the Galaxy tab running stock honeycomb bone stock got it 3 days ago still got protective tape on it. But the problem I have is I charged it all night while off from 0% to 80% (8 hour period) shouldn't it charge more then that? Also while using it at work on its charging dock plugged in via wall charger (same as when its charging at night) it seems to charge SUPER slow or not at all, it actually drains some times while plugged in. Any ideas?

Try charging it using the charger you got with the tablet, not the charging dock. I don't know exactly about the charging dock, but I know that it takes longer for the tablet to charge on USB.

[Q] Charging difference between computer & adaptor

Is there any difference between (USB) charging from computer (Laptop) and charging directly from AC adapter (Samsung provided)?
Because, I was using my phone more than two month with SetCPU for more batter life, and I was able to use 3 or 4 days. But just yesterday I charged from my laptop and was full 100%. But after 21 hours I got 15% battery renaming. It’s seems like drain battery after i charged from Laptop. Anyway I will try to charge today from AC adapter which is Samsung provided with phone.
May I know if any one experienced this.

musheercmr said:
Is there any difference between (USB) charging from computer (Laptop) and charging directly from AC adapter (Samsung provided)?
Because, I was using my phone more than two month with SetCPU for more batter life, and I was able to use 3 or 4 days. But just yesterday I charged from my laptop and was full 100%. But after 21 hours I got 15% battery renaming. It’s seems like drain battery after i charged from Laptop. Anyway I will try to charge today from AC adapter which is Samsung provided with phone.
May I know if any one experienced this.
Click to expand...
Click to collapse
The only visible difference should be in charging time - AC adapter should do it much faster providing the current of up to 1A (1000mA), much less then that to be expected from PC USB port.
I'd rather search for some rogue app draining the battery, maybe betterbatterystats would be a good place to start.

there wont be any dfference, the battery will get a charge from either but usb as mentioned wil ltake longer to charge

if i got 21hrs from my battery i would not be asking ANY questions!!..
musheercmr said:
Is there any difference between (USB) charging from computer (Laptop) and charging directly from AC adapter (Samsung provided)?
Because, I was using my phone more than two month with SetCPU for more batter life, and I was able to use 3 or 4 days. But just yesterday I charged from my laptop and was full 100%. But after 21 hours I got 15% battery renaming. It’s seems like drain battery after i charged from Laptop. Anyway I will try to charge today from AC adapter which is Samsung provided with phone.
May I know if any one experienced this.
Click to expand...
Click to collapse

USB ports are low power
your wall plug has a higher output than your computer USB port
PC USB = 5v 0.5amps
wall plug = 5v 1amp
so a wall plug will charger faster.

use SetCPU governor, I am sure you will get 3 to 4 days (moderate usage). same as mine.
My final finding; If we charge through PC-USB, it will take time to charge and same time, will discharge rapidly. because I charge my phone yesterday with AC-adapter and now my batter level is 13 hours with 95%. While I charge from PC-USB it was 20 hours with 15%. (all time are in moderated usage, and no any apps are not installed during this period)
I don't know how this, but this is my experiences.

I get the same results that's why I don't charge it through my usb port.

I agree with your conclusion that low-power charging just doesn't last on the Note. I was travelling and mistakenly took the wall adapter for my Plantronics BT headset instead of the Sammy adapter. It charges basically at the same rate as the computer usb. It took forever to charge, which was expected, but drained EXTREMELY quickly (10% / hour with almost no usage). By the end of the trip I was keeping it plugged into the charger whenever possible.
Back home on my original charger the phone is behaving like normal again. (84% after 8 hours with BT on and about 20 minutes of talk time / display on)

Phone not charging nor with AC nor USB

Hey guys!
My phone will charge battery only sometimes. The PC usb is not charging the battery (but it does see the usb), my ac is not charging also. I bought a new one. not charging. I tried with 3 different batteries - not charging.
It only charge sometimes when im using the galaxy s2 mini charger. But then it charge ex to 50% or 80% and it stops. I get the charging animation but the battery power drops normally like if i were using the phone.
I opened my 9000 and tried to see if the usb charger is burned or the soldering is bad. But everything is all right :/
By mistake, when i was "rebuilding my phone" i put the simcard backwards. And then even with the mini2 charger i was unable to charge more than 1%.
Do you know what can cause it? Its not the custom rom (helly bean) because i did not update it when it happened a month or so.
Thanks for any help.

Slow Charging 9.7" Tab S2...

Hey guys,
I haven't used my Galaxy Tab S2 in a while now. When I plugged it in it was at 0%. I used "a" (possibly not original that came with box) OEM 2.0A Samsung Charger + Note 5/Samsung Official Cable to charge my tablet. It has only gone up by 5% in the past 30 minutes.
Also when it was at 0% it said it'd take 7hr 12min to fully charge.
Is this normal when the tablet has not been used in a long time, or am I possibly looking at a bad charger/cable as the charger and cable charge my Note 5 just fine at the normal (non-fast charge) speed where it charges my phone fully in just over 1hr 30 min.
If someone could help me out to resolve this I'd be grateful.
Thanks! :laugh:

Don't think the charger and cable are faulty as they work on your mobile. Generally whenever I charge my Samsung galaxy tab s2 using a different charger it shows a notification if the charger plugged in is slow. If it didn't show this I don't see why it would take so long other than the charger your using has a lower output causing it to take a lot longer than usual to charge.

Every android device I have will sometimes not charge fast enough - it doesn't matter what charger I'm using. If I catch that the charge is slow I just unplug it and replug it a it'll be normal again. I think the "smart charge" goes crazy sometimes.

I had the same problem on the tab s2 8''. It was because the motherboard broke. They fixed it under warranty.
When I had this problem I couldn't attach any external device (usb, playstation controller) through USB. Try if you can

I don't have the original charger anymore to compare on my 9.7. I use anker potable batteries to be free of wall sockets. It isn't 2.0. In battery monitor widget, really good app, shows charge anywhere from 1200-1600mA 20% per hour while in use during charging. 5 hours total. I think with screen off I get 30%. I get 10 hours of screen on time zero loss with it off over night. Using 5.1
It could be the motherboard. I know with laptops charging starts to mess up a few weeks before it no longer works at. The connection between the USB and board weakens over time/use.

moustafasadek11 said:
Hey guys,
I haven't used my Galaxy Tab S2 in a while now. When I plugged it in it was at 0%. I used "a" (possibly not original that came with box) OEM 2.0A Samsung Charger + Note 5/Samsung Official Cable to charge my tablet. It has only gone up by 5% in the past 30 minutes.
Also when it was at 0% it said it'd take 7hr 12min to fully charge.
Is this normal when the tablet has not been used in a long time, or am I possibly looking at a bad charger/cable as the charger and cable charge my Note 5 just fine at the normal (non-fast charge) speed where it charges my phone fully in just over 1hr 30 min.
If someone could help me out to resolve this I'd be grateful.
Thanks! :laugh:
Click to expand...
Click to collapse
Sounds normal. The big Lion batteries in these devices are just weird at time. Running one down to 0 is a good way to kill the battery permanently. Let it charge slowly and then keep it above 20-30% from now on. Should improve over time.

I think its a myth you shouldn't let the battery get low. As long as the battery itself says I'm at zero at the correct voltage then zero is perfectly fine. I'm not an expert here but at 5% battery I'm at 3.6v and will turn off in a few minutes after that. I think batteries are manufactured to safely go down to 3.2 before saying no more. Need to charge.

Fast charging issues

Hey guys! A few weeks ago I noticed that fast charging doesn't work with my usual power sources (Xiaomi Power Bank, Xiaomi QI Car Charger), even though it worked before that. I only get around 850 mAh with them. The only way it works if I use the original wall charger. I use the original and a Baseus cable. It is also slow with the phone turned off. Any ideas what causes this?

what rom

LilProphet said:
Hey guys! A few weeks ago I noticed that fast charging doesn't work with my usual power sources (Xiaomi Power Bank, Xiaomi QI Car Charger), even though it worked before that. I only get around 850 mAh with them. The only way it works if I use the original wall charger. I use the original and a Baseus cable. It is also slow with the phone turned off. Any ideas what causes this?
Click to expand...
Click to collapse
The fast charge brick is needed to power the basic functions of the charger. I suggest you get the 27W brick in order to get the 20w fast wireless charging

nikolas60 said:
what rom
Click to expand...
Click to collapse
Xiaomi.eu ROM, I unlocked the bootloader a few weeks before this issue, but the problem also persists when the phone is turned off. Should I try to flash back the stock ROM with MI Flash?

My mi9 lite phone went slow charging too. Phone usually got a full charge after 2hrs but it went to 4hours to get a full charge after i connected my phone to transfer files to my laptop through a usb cable. What i did to get the 2hrs charging was reconnect my phone to the laptop using the same usb cable. At the phone a pop up appears with 3 choices...1st choice(forgot),2nd transfer files, 3rd transfer photos. I tapped the 1st choice and disconnected my phone. And i got my 2hrs full charging time back. Hope this will help.

I am on 12.0.2 and takes 2 hours to charge 90% mean that ~1.5 minute 1% charge
before flashing this ROM via EDL method took around ~1 hour with the original charger to charge from 20% to 90%