£1 Lithium Ion battery charger
Here’s another custom Li Ion battery charger and holder. Yesterday we ran a post involving a custom battery holder for cell phone batteries, today it’s a holder for a more conventional 18650 type Li Ion batteries.
To make a battery charger, just solder the red and black leads to the BATT+/- terminals on the charger board. I got this PCB on eBay for US $1.58 (£0.98). It can be powered by a mini USB cable and features a TP4056 chip which is a generic version of the LTC4056 Li ion charger chip.
We picked up some UltraFire brand Li Ion batteries in China. Seems like a poor name for a product that does have some reputation for sudden and intense explosions.
Via the comments.This entry was posted in DIY, Lithium Ion and tagged battery charger, how-to.