How do I charge a car battery without a charger? Ideally, your gas- or diesel-powered vehicle is supposed to do this on its own thanks to a handy part called an alternator.

Need to charge your car's battery? A trickle charger will help you do so safely and without a ton of equipment, but don't expect it to be quick.

Charging your car's battery needn't be complicated, but it's worth checking the details first.

A DC-to-DC charger uses excess engine-alternator current to charge the house battery bank. Use our guide to select the right parts and install them safely.

If your car's battery needs a boost with a 12V charger, you may be wondering how long the whole ordeal will take. A bit of a wait is better than alternatives.