Another option that works with both 6.0- and 12-volt batteries comes from LeicesterCN. This battery maintainer can be used as an automatic trickle charger, and after it's done monitoring the whole ...

Trickle chargers and battery maintainers keep batteries at the ready to start your car or power equipment, but they have different features and are used for different purposes. Here’s what you need to ...

which steps down the voltage and essentially trickle-charges the 12-volt battery from the traction battery. It only runs when needed, when the 12-volt battery reaches a lower state of charge ...