While there are certainly better methods of doing this (battery jump packs, for example) a maintainer will hypothetically charge a battery, though we’d recommend using other methods.

One option is to purchase a battery maintainer/maintenance charger to keep the battery sufficiently charged when your car isn't in use.

Whether you're preserving a classic or just avoiding that dreaded click, keep your car powered up with our picks for the best battery chargers and maintainers.

We also spoke with a seasoned collector and curator to get the inside dirt on car battery maintainers. The takeaway? If you're not using a maintainer, you're not taking care of your car.

Baking soda and water can be a good, inexpensive mixture to clean corrosion and crud from a car battery. Extreme temperatures affect battery performance so take steps to limit the impact. It’s early ...

Discover some of the most capable and easy-to-use car battery maintainers and chargers on the market along with some tips on how to choose one.

The Battery Tender Junior is a straightforward and easy-to-use battery charger and maintainer. It can be plugged into any wall outlet and is designed to charge most types of batteries.

CR's experts pick the best portable solar panels and battery chargers to power devices like phones and laptops, plus back-up batteries and power stations.