Renogy offers a wide variety of solar battery chargers and maintainers to ensure proper charging and longevity of solar battery banks. We’ve got all the chargers you need, whether a small single battery bank system or large, multi-bank rigs. Renogy has the components you need to maximize the quality and resilience of your solar setup. Shop battery chargers now.


  • 1.Do I need a solar battery charger?

    All batteries will drain eventually if left sitting idle. Flat batteries can be a common issue for RV owners who keep their RV’s parked long term and forget to keep their batteries charged. Batteries could experience permanent damage if left discharged for an extended period. Thankfully, permanent battery damage can easily be avoided with a solar battery charger.

     Solar battery chargers collect energy to safely maintain the charge of batteries in your home, RV, van, or wherever your battery bank is stored. Battery chargers can also double as a backup charging source. You can use them as a battery maintainer whenever you find yourself depleting your battery bank without access to sunlight.

  • 2.Do solar car battery chargers really work?

    Yes, solar car battery chargers work. But you must use a solar battery car charger for its intended use. Solar battery chargers can only provide a small amount of current to the battery as they don’t typically come with multiple amperage settings.

  • 3.Can I charge my solar batteries with an outlet?

    If you have lithium iron phosphate batteries, you can use the Renogy 20A AC-to-DC Charger to charge your battery with a wall outlet. The charger kit includes 12AWG alligator clips and outputs power based on the battery's power, voltage, and current condition. The unit's status indicator light lets you know the connected battery's operating mode and condition. Once the battery hits full charge, the Portable LFP charger automatically monitors and maintains the battery.

  • 4.Can I charge my solar batteries with my alternator?

    Yes, we recommend using Renogy's DC to DC MPPT Charger to charge a secondary battery from an alternator connected to a primary battery or by utilizing solar panels connected directly to the unit. While your vehicle's alternator prioritizes your primary battery, the DC to DC MPPT charger gives your solar system to put your secondary battery first. Renogy's DC to DC MPPT Charger will also work with flooded lead acid, gel, AGM, or lithium iron phosphate batteries.

  • 5.How do I charge both my house batteries and my solar battery?

    We recommend purchasing Renogy 12V DC to DC On-Board Battery Charger. This charger is designed to charge secondary batteries while driving, using the primary battery connected to the alternator. While your vehicle's alternator prioritizes your starting battery, this allows your solar system to charge your service battery first. It's the smart way to keep yourself fully charged and off-grid longer. This charger can be used with flooded lead acid, gel, AGM, or lithium iron phosphate batteries.