Building a diy led ring for dslr camera 3.7v li-ion battery charger circuit. tell me how many amp and volt transformer needed and diagram.. Adafruit industries, unique & fun diy electronics and kits usb/dc lithium polymer battery charger 5-12v [3.7/4.2v cells] id: 280 - charge your single-cell lithium ion. How to make a 12 volt 5 amp battery charger - diy technology tutorial - guidecentral.
Find great deals on ebay for 3.7 volt battery and charger and 3.7 volt rechargeable battery. shop with confidence.. This is a lithium-ion charger for lipo batteries. circuit schematic shows configuration for charging single 3.7v lipo battery but voltage can be set to charge several. Electronic projects maybe its time for you to build your own diy portable usb charger here is a simple battery charger circuit intended for 12 volt gell.
