Database Users

i think i have an ideea with our battery

our sgs think our battery its empty at 3,7v or 3,68.
if we could change the limit for the battery is considered empty, somewhere in the 3.1 to 3 V, thinking how much could keep a battery, the phone started.
if the battery is not empty exaggerated, I believe it can be used without problems.
Sony Ericsson uses batteries to 3.2 somewhere if I remember well.
I dont know how I could do something like that, that's why I posted here this idea.
from here http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
"Power loss through Protection Circuit
Besides common aging, a Li-ion battery can also fail because of undercharge. This occurs if a Li-ion pack is stored in a discharged condition. Self-discharge gradually lowers the voltage of the already discharged battery and the protection circuit cuts off between 2.20 and 2.90V/cell. Some chargers and battery analyzers (including those from Cadex) provide a wake-up feature, or “boost,” to re-energize and recharge these seemingly dead Li-ion batteries."

If v can do the cut off to 3.5v we.will gain roughly 35% more life. But ib think it will take 5hrs for a full change
Sent from my GT-I9000 using XDA App

Its a lipo battery that is the saftey cutoff point...same as RC cars...going to low will kill your battery...
Sent from my GT-I9000 using XDA Premium App

not too low
not to low, low enoug to have long battery life.
for charge dont matter 2,5 ore to 4. i dont think wil be 5

good idea....do it°!

I'm ready to test it, but how we can change limitation of battery ?
Explain your idea.

Yes, could you explain more ? Do you know how to do it ?

I have few ideas on battery issue too:
1)
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2) real rocket for your galaxy:

Great idea but a moot one at the same time I'm afraid. No one knows more abt batteries than Koreans. They live for them. If this limit could have been set lower it would be lower. Also I have never heard of battery firmware being flashable through a phone.
Sent from my GT-I9000 using XDA App

.
schiphol said:
Great idea but a moot one at the same time I'm afraid. No one knows more abt batteries than Koreans. They live for them. If this limit could have been set lower it would be lower. Also I have never heard of battery firmware being flashable through a phone.
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
sony ericsson use this trick to have longer battery life, anyway we dont use a battery 2 years.
i dont now how to implement this trick.

I have the battery monitor app and in stock XXJVK, at 01% the battery is between 3.4 and 3.5 volts.
Fully charged is 4.18 volts or thereabouts but this falls fairly quickly to 4.0 volts which is where the battery stats need to be accurate to show true percentage and not just jump down to 80%.
Fully charged for me takes about 3 hours but I charge all my batteries (three using a separate charger and not in the phone itself.

markdj57 said:
I have the battery monitor app and in stock XXJVK, at 01% the battery is between 3.4 and 3.5 volts.
Click to expand...
Click to collapse
+1.
Swyped from another GALAXY

xenos126 said:
If v can do the cut off to 3.5v we.will gain roughly 35% more life. But ib think it will take 5hrs for a full change
Click to expand...
Click to collapse
It's not linear. It falls rapidly at lower voltage. You would gain about 5% I think...

next time
i have a multimeter, next time i verify de power of my battery.(i am surre it not 3.4-3.5v)

darckreign1984 said:
i have a multimeter, next time i verify de power of my battery.(i am surre it not 3.4-3.5v)
Click to expand...
Click to collapse
Just use the battery monitor app...
But feel free to use a multimeter if you want.
Sent from my GT-I9000 using XDA App

markdj57 said:
Just use the battery monitor app...
But feel free to use a multimeter if you want.
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
battery monitor indicate 3.680v

Nexus 7 Battery Life

Hi! I recently got a Nexus 7 and I am somewhat disappointed in the battery life. I am only getting around 3 hrs of battery life and is draining quickly while idle. The battery is also draining while being used while connected to my pc. I am using Jellybro rom along with Trinity Alpha 64. Can anyone recommend the best Rom/Kernel combination for battery life ? I read that Trinity is great for battery life so I'm doubting the Rom (however it works great on my Galaxy Nexus). As I dont always use the same things on my tablet I cant really test the different roms myself.
Thanks
Sent from my Galaxy Nexus using Tapatalk 2

I'm getting great battery life on my stock N7 :|
I tried it the other day, used it all day and it died after around 8-9hrs. Was tethering via bluetooth, brightness set to auto, and either played games, used FB messenger, or read Wall St Journal frequently throughout the day.
Sync and location enabled.
Oh and the N7 will probably discharge faster than your PC can charge it. Typical USB ports on a PC only output .5A of power. Chargers meant for tablets usually provide about 2A of power. So thats another issue.
Might I suggest running the N7 till it shuts itself off due to no battery, then letting it sit and charge overnight till its 100%?
Sent from my Nexus 7 using xda app-developers app

Thanks for the reply Can you please tell me the Screen on time ? Since then I switched to Paranoid Android so I'll how it goes but maybe the stock rom has a better battery life ?
Thanks
Sent from my Galaxy Nexus using Tapatalk 2

Last night I got 19.5 hours on battery with 7.5 hours screen time on paranoid android. I'd say its safe to say that...
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Hmm sadly I didnt take a screenshot when I did that 8-9hr run.
I'll unplug my tablet for today though and by tonight maybe I'll have some interesting results for ya.
Sent from my Nexus 7 using xda app-developers app

If its enough to make you mad then its prolly not right.
To say your doing in wrong would be a far shot but your tablet is definitely doing it wrong..lol. I was just saying the other night to my girl that I was super happy with the battery because it lasts all day for me. From 7am in the morning till 12 at night. Of course im not using it every waking moment but I do check it/use it as much as I would have normally used my phone. During work I am on wifi till about 430 and then from 430-8/9 while im in class im tethering using it almost the whole time, then when im home for the rest of the night I will be on wifi. The things I do vary from webbrowsing (reddit, xda, etc) emailing attachments, listening to google music and GPS/texting. (yes I use tablet talk which is why I rarely use my phone anymore except to setup tethering)
If you are having any issues with your battery I recommend to get a battery app to reset the stats and try again. If not return to stock then try that method again.. then if NOT return.

revamper said:
Last night I got 19.5 hours on battery with 7.5 hours screen time on paranoid android. I'd say its safe to say that...
Click to expand...
Click to collapse
Haha Thanks for the replies I'll see how it goes with Paranoid Android
Sent from my Galaxy Nexus using Tapatalk 2

modstorm said:
Haha Thanks for the replies I'll see how it goes with Paranoid Android
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
Just turn off your google account auto-sync and your battery life should increase dramatically. I use the power widget to toggle sync.

Okay here are some screenshots of my battery life... Not sure if its uploading properly though since im doing this through the app.....
EDIT: Looks like it didnt work... But basically I had about 20.5hrs of total battery time. Screen on for a total of 5.5hrs. Bluetooth on the entire time, WiFi on for about 6 hours.
Sent from my Nexus 7 using xda app-developers app

Nippero said:
I'm getting great battery life on my stock N7 :|
Oh and the N7 will probably discharge faster than your PC can charge it. Typical USB ports on a PC only output .5A of power. Chargers meant for tablets usually provide about 2A of power. So thats another issue.
Click to expand...
Click to collapse
My N7 discharges faster than the google provided AC mains charger can recharge it. That seems pretty pathetic to me. How is it for others?

How to calibrate battery?

My battery stats and consumption have been pretty good and whatnot but I just realized it's off and sometimes doesn't count down consistently. But then it will catch up real quick. I am assuming the battery chip/driver are able to measure amps and not guesstimate voltage because of this behavior. I charged battery all the way up, unplugged, turned power off, plug back in til full and started up again but the behavior is still erratic. I am pretty sure I am getting somewhat accurate readings, it is just doing so in an erratic method. Ideas or references I missed? Anybody else notice?
As a side note I thought I was losing 1-2% per 6-8hours of standby but I realized there is a bug or the battery driver doesn't read correctly in standby. Anybody notice this too?
I voided my warranty.

@rbiter said:
battery.
Click to expand...
Click to collapse
The battery reporting is definitely inconsistent on this device. I've tried pinging it via terminal emulator to "force" it to re-poll voltage and capacity, with no luck, it doesn't update it to where I know it should be. Not sure if anyone has dissected this battery yet, many Li-Po's have an internal chip, not sure about this one.

I am quite sure it has a chip. Trying to confirm if it has a chip that measures amperage. I am guessing driver is bad or bugs.
I voided my warranty.

One thing I've noticed is that it seems to poll correctly if I charge to full and don't reboot at all. As soon as I reboot it starts flatlining after that point.
Sent from my Nexus 4 using Tapatalk 2

Here's my best example yet. Upon plugging in it's quickly gone from 15 to 25...err....29% however. If I charge to 100% and don't reboot after that it doesn't drift. Something breaks the phones ability to read voltage/capacity for some reason upon rebooting. Stock or not stock, same behaviour. A few reboots in there, a couple where the % went UP.
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What is the problem can any one point out why I am getting do less battery is it because of atooma or acuupedo
Sent from my Nexus 4 using xda app-developers app

There is no battery calibration method that is anything more than a placebo. Just flash your ROMs at 100% and don't charge your phone 5 times a day. Let it drain and fully recharge once in awhile. Past that, there isn't much to be done.
Edit: Franco mentioned in his kernel thread that the battery reporting seems a little wonky. He is hoping it is addressed in 4.2.2.

Charge your phone fully while it is off to 100 then do a battery star wipe. Let drain till around 5 to 10 from regular use and then charge all the way up.
And remember that batt wipes do nothing more than have your rom read the battery more accurately, it had nothing to do with giving it better battery life. You are gonna want to flash a more efficient kernel or rom to achieve that.
Sent from my SGH-T999 using xda app-developers app

estallings15 said:
There is no battery calibration method that is anything more than a placebo. Just flash your ROMs at 100% and don't charge your phone 5 times a day. Let it drain and fully recharge once in awhile. Past that, there isn't much to be done.
Edit: Franco mentioned in his kernel thread that the battery reporting seems a little wonky. He is hoping it is addressed in 4.2.2.
Click to expand...
Click to collapse
Hard to find info about the li-po battery, especially the one in this phone. I wouldn't rule out poorly designed circuitry at this point either. Love the phone, question build quality.
Sent from my Nexus 4 using Tapatalk 2
---------- Post added at 12:29 PM ---------- Previous post was at 12:20 PM ----------
djpingpong said:
Charge your phone fully while it is off to 100 then do a battery star wipe. Let drain till around 5 to 10 from regular use and then charge all the way up.
And remember that batt wipes do nothing more than have your rom read the battery more accurately, it had nothing to do with giving it better battery life. You are gonna want to flash a more efficient kernel or rom to achieve that.
Sent from my SGH-T999 using xda app-developers app
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Click to collapse
Wiping battery stats does nothing more than reset the current charge cycle's percent usage by app/process. That's it, it won't increase the accuracy of capacity reporting.
Sent from my Nexus 4 using Tapatalk 2

CMNein said:
Wiping battery stats does nothing more than reset the current charge cycle's percent usage by app/process. That's it, it won't increase the accuracy of capacity reporting.
Sent from my Nexus 4 using Tapatalk 2
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Click to collapse
This is spot on. I tried to make that point earlier with my placebo comment, but some people are slow to catch on. Thanks for spelling it out.

LG G2 charging times

I've been hearing here about charging times of 60 minutes (from zero to full), yet in the following professional review, that guy measured almost 3 hours...
http://www.anandtech.com/show/7251/lg-g2-and-msm8974-snapdragon-800-a-quick-look/3
What gives ?

Noam23 said:
I've been hearing here about charging times of 60 minutes (from zero to full), yet in the following professional review, that guy measured almost 3 hours...
http://www.anandtech.com/show/7251/lg-g2-and-msm8974-snapdragon-800-a-quick-look/3
What gives ?
Click to expand...
Click to collapse
I didn't pay attention but the charge time is definitely not 3 hous. maybe because of the OTA?

There on crack, i have seen mine do it in less than an hour and i went from 57 to 91 in just under 20 minutes and i was using it as well

Takes my phone almost 2 hours, I guess everyone's phones different.
Sent from my LG-D801 using xda app-developers app

Iim getting a No use charg time with stock charger is 2% a minute,

Noam23 said:
I've been hearing here about charging times of 60 minutes (from zero to full), yet in the following professional review, that guy measured almost 3 hours...
http://www.anandtech.com/show/7251/lg-g2-and-msm8974-snapdragon-800-a-quick-look/3
What gives ?
Click to expand...
Click to collapse
If you use any other charger that 1.8 amp plus it takes longer...I have a 2.1 amp car charger that's faster than ac. Wireless charger outta about 5 hours. It's made for night stand.
Sent from my VS980 4G using XDA Premium 4 mobile app

Also depends gr8ly on what's running/sync intervals, and if using the stock wall charger or not... I normally get about 1% charge a minute ...

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What's that look like? 90 minutes to go from 25% to 98%...using factory charger, screen off but otherwise all normal. WiFi, GPS, and data/sync all on...
Sent from my VS980 4G using xda app-developers app

Fastest charging phone i have owned to date.
My first charge of the LG G2 (Bell variant), using the stock wall charger with the phone at 0% battery life and turned off from 0% to 100% battery life was 1 Hour 8 minutes.

Put it on airplane mode and it's juiced up in 45 minutes..
Sent from my LG-D802 now Free

jrgilbert79 said:
If you use any other charger that 1.8 amp plus it takes longer...I have a 2.1 amp car charger that's faster than ac. Wireless charger outta about 5 hours. It's made for night stand.
Sent from my VS980 4G using XDA Premium 4 mobile app
Click to expand...
Click to collapse
when do i remove it from the charger? when the lockscreen indicator says "charged" or when the LED charging indicator gets turned off? im confused because lockscreen indicator says "charged" but the battery icon is still doing the "filling-up" animation together w/ the LED light indicator ON. so i dont know if its already full or do i still need to wait for the LED & the battery icon animation to stop and get turned off. HELP!
LG-D802
---------- Post added at 08:10 PM ---------- Previous post was at 08:09 PM ----------
jrgilbert79 said:
If you use any other charger that 1.8 amp plus it takes longer...I have a 2.1 amp car charger that's faster than ac. Wireless charger outta about 5 hours. It's made for night stand.
Sent from my VS980 4G using XDA Premium 4 mobile app
Click to expand...
Click to collapse
when do i remove it from the charger? when the lockscreen indicator says "charged" or when the LED charging indicator gets turned off? im confused because lockscreen indicator says "charged" but the battery icon is still doing the "filling-up" animation together w/ the LED light indicator ON. so i dont know if its already full or do i still need to wait for the LED & the battery icon animation to stop and get turned off. HELP!
LG-D802

Remove the charger when it indicates its fully charged and/or the LED is green.

It is definitely not 3 hours.
I get from zero to full in 100 minutes.Give or take a minute. Every Time. It charges 1 percent per 1 minute.

I havent used the stock charger yet (using one from a note 2 currently), but I'm getting full charge in about 1.5hours.
Definitely not 3.

After upgrade to KK, my G2 charging time take more than 3 hours from zero to 100%.
And i'm using original charger and usb cable for G2.
Any solution ??
TIA

Try a different cable.
Typos courtesy of my LG G2 (D803) running Mahdi-ROM.

the_gunners said:
After upgrade to KK, my G2 charging time take more than 3 hours from zero to 100%.
And i'm using original charger and usb cable for G2.
Any solution ??
TIA
Click to expand...
Click to collapse
I have the same issue. It take almost more than 3 hours. This happen after Kitkat update.

My phone charges with the original LG Travel Adapter for bit less than 2 hours from about 10 to 100% and I'm also using Kitkat.

My g2 with original charger and last original kitkat go 0 to 100% in 2h with phone on.

Charge time comes down to 3 things.
Total battery, current if charge and efficiently if the device/cable charging it.
Sent from my LG-D802 using XDA Free mobile app

Problems charging after latest t-mobile update

Has anyone had any trouble charging after the update? The one that promised optimized battery life? I always charge my phone in the morning so it's not just sitting at 100% during the night. I gave it almost 2 hours this morning and it only got to 67%. I used the Ampere app and it starts at like 100mAh and then slowly goes to about 800mAh and then fluctuates in between. I know nothing is wrong with the charger because I plugged in my note 3 with the same app and it showed 1200mAh which is what the charger is rated for. I've also had slightly worse battery life after updating. The day I updated I could only get 3:28 sot, and before updating I could easily get 4 and a half to 5+ sot. Anybody have a problem like this or maybe a fix?

Hello, yesterday was my first day after the update and my battery life went from 3.5 hrs SoT too 4.5-5.0 hrs. Yesterday was the first 5hrs of SOT I've ever had. I'm happy my device is normal. It all depends on the usage like today I'm using my phone a little more. I'm using more battery. But in not tripping if I wanted to save battery I know I could!! It's very possible.
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Sent from my SM-G935T using Tapatalk

Sent from my SM-G935T using Tapatalk

I had problems charging the phone using the wireless charger ,I put the phone on the charger overnight, when I wake up the phone was hot (that was the first time it happened)it was charged to 64%,plugged to the USB charger and it's been working normal since
Sent from my SM-G935T using XDA-Developers mobile app

Try restarting your phone. Might sound dumb I know but I've had instances where fast charging didn't work until I restarted or that my battery percentage was not "correct"

I've restarted many times now and tried wiping the cache but still nothing. The battery seems to be depleting semi-normally again, still not as good as it was but the charging still takes a long time.

Have you tried it without the app?
By the way, the phone using Qhich Charge 2.0 has built in software that communicates with the charger. No need for a 3rd party app.
I haven't had any problems charging after the update.

The app doesn't help charge the phone, it just shows how many mAhs are going into the phone from the brick. Since the phone has been charging so slowly I wanted to see if power coming in was being slowed or something for some reason

Gamecock33 said:
The app doesn't help charge the phone, it just shows how many mAhs are going into the phone from the brick. Since the phone has been charging so slowly I wanted to see if power coming in was being slowed or something for some reason
Click to expand...
Click to collapse
Ugh I am now having this issue after the update. I plus it in and it's now telling me it will take 5 hours to charge (lock-screen). Is your phone still doing the same?

takethebox said:
Ugh I am now having this issue after the update. I plus it in and it's now telling me it will take 5 hours to charge (lock-screen). Is your phone still doing the same?
Click to expand...
Click to collapse
Holy cow. From 90 minuites to 5 hrs? That's along time. I haven't charged yet since I don't need too till later tonigt.
Sent from my SM-G935T using Tapatalk

nano303 said:
Holy cow. From 90 minuites to 5 hrs? That's along time. I haven't charged yet since I don't need too till later tonigt.
Sent from my SM-G935T using Tapatalk
Click to expand...
Click to collapse
I just disabled fast charging. Restarted. Then re-enabled. Back to normal now.

Does the last update from tmobile does increase your battery life? Or at least gives you better battery.
Sent from my SM-G935T using Tapatalk

My battery life is about the same now, but it's still the charging part. It's shown it'll take about 3 hours to charge but when I let it charge yesterday it's still going as of now with 4+ SoT. So battery life is okay, it's the charging. I'll try disabling and restarting and see if that helps
Sent from my SM-G935T using XDA-Developers mobile app

If all else fails, do a factory reset. I did after this last updated since it seems like it was a pretty important one. Differently get better sot, better battery drain while idle. Everything is backed up in the cloud so it wasn't that big of a deal.

I've tried the reset, knowing that a factory reset would have to be next. But charging seems to be back to normal now. I still think it's a little slower than it was, but when I plug it in, it shows anywhere from an hour to an hour 20(when my phone is under 10%). I think it's coming back slowly
Sent from my SM-G935T using XDA-Developers mobile app