Mostly intended as a battery maintainer, this 0.75-amp charger is ideal for small engines, lawn tools, and motorcycles; it is not for resurrecting a dead car battery.

Thankfully, there’s an easy fix with this car battery charger that is now an amazing 85% off at Walmart. The $139 Husgw 12V 10A Battery Charger is now only $23.

Correction: That’s what I used to do. Now I have a method that saves me a bunch of time… What to do. Find a flat, firm surface, like a table or a book — this will be your test surface.

CATL states that it’s already operating 34 battery-swap stations in Chongqing, China, with plans to have 50 stations by year’s end. Looking at the bigger picture, the Chinese battery giant is ...

The keyless car is a marvel of engineering. But how is it that they can start even when the battery in your key fob goes dead? The answer lies in science.