A common problem with older cars can be an electrical amperage draw that will kill a battery in a matter of hours or sometimes over the course of a day or more. The most common way to diagnose this ...

Four Wheeler reader Allan asks:I have a 1985 and 1986 CJ-7 both set up almost exactly the same with the following exceptions: the 1985 has dual batteries with Kirkland batteries (6 months old) and a ...

A battery management system (BMS) monitors and controls batteries in vehicles such as more-electric aircraft and electric cars. It needs to undergo rigorous tests under nominal and extreme conditions ...

Car batteries tend to die at the most inconvenient moments, so periodic testing is the best way to avoid these troubles. Knowing what causes repeated battery failures can help you stay ahead of the ...