The battery issue with tablets is for sure a problem. Phones too. I had a test bank of 10 devices with openSTF (smartphone test farm) and 3 phones cracked open from bloated batteries within the year.

What I do now is open up old tablets, remove the battery and replace it with a DC-DC converter. Because tablets and phones won't turn on without seeing a battery, you can't power them though USB with the battery removed.

But the DC-DC option works ok. Sometimes you need to remove the battery protection circuitry from the battery because the tablet needs to see it. This can be a bit hazardous. But usually providing about 4 volts is enough.

Of course all this is not for those without electronics knowledge.

Ps I also detest Google's removal of the shortcut buttons under the power button menu :(

hattmall

>n from bloated batteries within the year.

Is this from the battery being on the charger constantly? I remember having a similar problem years ago. I thought most devices now would manage charging by letting it drain a bit automatically. At the time though they didn't so I for my continually connected devices I just used simple plug timers that cut it off for a few hours a couple times a day.

IronHerald

There's also the possibility of using Advanced Charging Controller - though it requires root. Essentially you can set it up so when the battery reaches eg. 100% it stops charging, and resumes only once it reaches eg. 15%. Surprisingly the Android devices that I have still don't ever stop charging on their own, constantly keeping 100%.

[Advanced Charging Controller (ACC)](https://github.com/VR-25/acc)

[BU-808: How to Prolong Lithium-based Batteries](https://batteryuniversity.com/article/bu-808-how-to-prolong-...)