His latest endeavor is a LiFePO4 battery charger that he made out of parts he had on hand for under $0.50 US. (Although we think he really made it for the fun of making it.) The circuit is ...

In this post you will see how to quickly and easily set up a LiFePO4 Battery/Power Pack with a cheap module from China! The LiFePO4 (lithium iron phosphate) battery, also called as lithium ...