The LP3946 is a stand-alone single cell Li-Ion charger with an integrated pass transistor and current sense resistor. In addition to its charging function, it can be used in low dropout (LDO) mode.

Noah is a long-time writer, editor, website developer, and creative based in the United States and currently focused on automotive writing. Electric and hybrid powertrains and battery specifications ...

Nerd Ralph loves cheap and dirty hacks, and for that we applaud him. 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 ...

This 24V to 36V linear battery charger is long overdue. While this is an old circuit technique, it is optimized for charging higher voltage lead-acid battery packs, and could be used on other types of ...

A DC-to-DC charger uses excess engine-alternator current, typically redirected from the starting battery bank, to charge the house battery bank. This can also be performed by an automatic charging ...

This article was updated with new information in December 2025. A vehicle’s performance starts–no pun intended–with its power source, making battery care one of the most important—yet ...

It has happened to most of us hasn’t it? You sit in the car, turn the ignition and… *crickets*. Yup, the battery is dead. Yikes! You probably didn’t drive the car for the past few days or you ended up ...