Hi fellow RCIndians,
                             Damaged lipos have often some cells in working condition .Solder as many cells as you need /have to make a power back up for 5V DC devices (Mobile chargers, Modems, Leds ..etc) .

Since all your individual cells won't have same voltage please do not directly short circuit cells in parallel while soldering.

Use a resister or a filament bulb to short the cells and voltages should  be Equal. Electronics Circuits and Switches are not modified and are used from a Single module .

f4k3url/10GxR0s any generic/chinese power bank should do the job.


Any power bank will do. Just remove the intenal battery (so it doesn't mattery which one u buy 1000mah or 5000mah ) and solder connections to lipo.

config:
Battery:
1S3P
2650*3 ~  8000mAh
1 USB out (max 800mA)
1 Torch (4 leds)
1 UV currency detector

Charging is done via the provided 2mm nokia pin with max 300ma(although lipo can handle more ,charging ckt will fry if current goes above 700ma)

very good work man. Can u explain what type of resister you used?

I used a 1k resister 1/4W rating.any resister can be used as long as current flowing is less than the rated current.Then again batteries have only a little offset so current is not going to flow for long periods of time.