Many chargers double as maintainers, but you don't need many amps just to keep a battery topped up. Photo credit: David Traver Adolphus / AutoGuide.com.

This battery maintainer is an all-weather charger, maintainer, trickle charger, and battery desulfator, making it perfect for all 12-volt lead-acid, flooded or sealed maintenance-free batteries.

This device works as a battery charger and maintainer and is ideal for a wide assortment of battery types and sizes. Nexpow F1000 1A Battery Charger, $20 (was $65) at Walmart.

With a smart 12V trickle charger and maintainer, you can revive your car battery in a relatively short amount of time. And this one from GPED is discounted to $22 on clearance at Walmart , 56% off ...

Our Recommended Car Battery Chargers. Best Overall. NOCO Genius 1. Now 25% Off. $40 $30 at Amazon. $76 $30 at Walmart $30 at crutchfield.com. Credit: Gannon Burgett.

It's only a matter of time before your bike's battery will go flat on you — Discover the best motorcycle battery chargers rated by MCN to keep your bike ready to ride ...

It's only a matter of time before your bike's battery will go flat on you — Discover the best motorcycle battery chargers rated by MCN to keep your bike ready to ride.