We have a Lincoln Lowrider with 6 batteries in the trunk. This charger not only charges batteries but also restores them. I don't know the details of how he fixes them so I can't go into detail but it should save us some money on buying new batteries. It fits snugly between batteries and is small and powerful. I've only used it once or twice. We keep it in the car because a lot can happen to the batteries every day. It's nice to have tools that can quickly charge and repair batteries.
CARKU Pro-10 black/red
91 Review
Keep Your Battery Fully Charged With A Smart 12V Charger/Maintainer Featuring Winter Mode
28 Review
Mroinge Automatic 6V/12V Trickle Charger For Vehicles, Motorcycles, Boats And More - Maintain Your Batteries With Ease!
29 Review
Charger Vympel 57 black
110 Review