Lithium Ion - Lithium Poly Charger by LM317 | Circuit Project Electronic

Lithium Ion - Lithium Poly Charger by LM317

The above circuit will charge any 2-cell * Li-Ion battery pack. Maximum current is about 650 milliamps. The circuit is designed for batteries of 900mah or higher. Note this circuit is NOT for Li-Metal batts (i.e. Duralites). Power source can be a 12v Gell cell (Power panel), or can be powered by a car’s cigarette lighter. I use an old 12v DC wall transformer (800ma or more.) Radio shack sells a 12v/1amp wall DC adapter #273-1776 that will work. Supply does not need to be regulated. In fact my cheap supply outputs 17 volts with no load.

Read More Source:
http://www.shdesigns.org/lionchg.html
Thank you.

This entry was posted on Saturday, March 29th, 2008 at 7:48 am and is filed under LM317, battery charger. You can follow any responses to this entry through the RSS 2.0 feed.