The 8 Best Solar Car Battery Chargers
This wiki has been updated 6 times since it was first published in August of 2018. The electrical charge in 12-volt batteries slowly depletes over time, so if you have a car, ATV, boat or RV that sits unused for weeks at a time, you'll want one of these solar chargers to keep the battery topped off. These gadgets can help extend the life of your battery, and some even include a controller to prevent harmful overcharging. When users buy our independently chosen editorial selections, we may earn commissions to help fund the Wiki. Skip to the best solar car battery charger on Amazon.