Check out our list of the best battery maintainers below. We have used the MOTOPOWER MP00205A to maintain our 12-volt lead-acid batteries, and it has performed exceptionally well. The charger is ...

Trickle chargers are best for short term use to keep a weak battery charged ... powering various computers and control modules even when the vehicle is OFF. These will drain a 12-volt battery. Trickle ...