HUGE Battery Drain

[JDFind]

I recently bought a S4 Mini (i9195) and I noticed it has a decent battery life.. until 5%. When the battery reaches 5% I get a huuuge drain.. it's like, draining to 0% in about 1 minute. And it happend all the time. Whats wrong with the device? :crying:

 

[fburgos]

I'll try that, haven't noticed what happens at 5%.
Im shure mine has 3%/hour battery drain over night so I'll spect from 5% at least one hour at idle

Sent from my GT-I9192 using Tapatalk 4

 

[Whosat]

Doesn't happen to me but I've experienced that with my old phones. Always happens when I charge my phone when it's far from empty and unplug it when it's far from full, multiple times.

Like I used to plug it in whenever I could find a power source so that I can play my games throughout the day. And I usually have to leave halfway for other things so I'll unplug it when it isn't fully charged yet.

Then after a while I noticed that the battery was draining quickly when it was at lower percentages but draining slower at higher percentages.

It slowly became more constant as I learnt to charge it when it was completely dead and unplug it only when it was full. (I bought an external battery pack USB charger to help with this)

 

[muhschaf]

I think this calls "memory effect" or?

 

[chris42too]

Lithium batteries do not have memory effects anymore.
If the phone is new, try charging it completely and discharge it completely a few times. If it then still persists, the battery is probably not calibrated right.
The real size of a battery is not as stated on the cover 1900, but varies around it, depending on the manufacturing. Similar to CPUs, that get tested and then categorized for certain speeds.
So could be that you have a less optimal battery and therefore the calibration to 1900 as expected by the system is not right. So when you see 5% you are already much lower in reality.
I am new to Android, so I do not know if there are battery calibration tools out there, but I guess so.

Greetings
Christian

 

[ro11er]

Solved my battery drain by updating google maps to latest version

Sent from my GT-I9195 using xda app-developers app

 

[ninjafox]

Nope, the system will just shut down at about 5% to prevent a deep discharge of the battery which is really bad for li-poly/li-ion batteries.