DIY 24000mAh Power Bank from old laptop batteries

DIY 24000mAh Power Bank from old laptop batteries

Take out 18650 cell from old laptop battery.
Check voltage of that cell/batteries.

Try to charge them,
1) If it will get heated then throw that cell.
2) Check if battery is able to charge completely. After full charge check battery voltage, it must be 4.10-4.20
3) Keep it idle after charging for week, check voltage everyday if it decrease then throw it.

Order power bank 5V voltage booster circuit from
Amazon/ebay etc

Видео DIY 24000mAh Power Bank from old laptop batteries канала Sachin Bhangale