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 ...

Lithium batteries now form an integral part of modern-day living and can be seen in multiple applications such as power tools ...

Lithium battery packs reaching the ... but could measure the cells instead of the control circuitry and was getting over 11V. Clearly, the control circuit wasn’t allowing an output.