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 (http://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)
(http://www.thehobbyshop.in/images/IMG_20130405_184739.jpg)
(http://www.thehobbyshop.in/images/IMG_20130405_184847.jpg)
(http://www.thehobbyshop.in/images/IMG_20130405_185004.jpg)
(http://www.thehobbyshop.in/images/IMG_20130405_184936.jpg)
(http://www.thehobbyshop.in/images/IMG_20130405_185044.jpg)
(http://www.thehobbyshop.in/images/IMG_20130405_185117.jpg)
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.