Battery problems rarely arrive out of nowhere. Long before a car refuses to start or a phone dies at 20 percent, small changes in behavior reveal that the power source is struggling. I look for those ...

Although internal combustion engines rely on burning fuel and air to run, they do need some help starting up in the first place. In the old days, that could mean standing outside your car and getting ...

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 ...

The amount of amps you need from your portable jump starter depends on the type of vehicle you are trying to jump-start. Generally, smaller vehicles with smaller engines require less current, while ...

A charged battery is a happy battery. Keeping your car’s battery properly charged is essential to long life and reliability. When you drive, your car’s charging system keeps your battery topped up.

In today’s boats, electric power rivals the importance of engine horsepower. Even the electronic control unit on today’s marine engines—that brain that makes outboards and inboards do what we want ...