Ideal when sunshine

is not readily available, Renogy Battery Chargers utilize a multi-stage charging process to maintain your deep cycle 12V batteries without overcharging them. These plug-and-play units are compatible with Flooded, Gel, AGM, and Lithium batteries.


  • How does the 200A Isolator work?

    The isolator is connected to the vehicle's alternator, starting battery, and house battery. The purpose of the isolator is to simultaneously charge the starting and house batteries using the alternator while also keeping them isolated when discharging them.

  • Does my RV need a DC to DC battery charger?

    It is an optional component that charges the house battery using the starter battery. This product can charge AGM, Gel, Flooded, and Lithium batteries.

  • Can I charge my deep cycle battery with the Battery Maintainer?

    No. The Battery Maintainer is strictly designed for CCA starter batteries and is not meant to charge deep cycle batteries.

  • Can the Battery Maintainer be connected 24/7 to a 12V Starter Battery?

    Yes, the Battery Maintainer has built-in safety protection that will protect the battery from being damaged.

Comparsion Chart

Battery Charger Type Battery Isolator DC-DC On-Board Charger DC-DC w/MPPT On-Board Charger
Isolated Auxilary
Battery Charging
Heavy Duty Design
Selectable Deep
Cycle Charging Profiles
Lithium Compatible
Solar Input