Collection: Battery Management

Reliable power starts with a well-managed battery system.

Explore marine battery management solutions designed to help boaters monitor, charge, protect and control onboard battery systems. From everyday cruising to extended time on the water, dependable battery management helps keep essential equipment powered and ready when you need it.

Shop marine battery chargers, battery monitors, battery switches, isolators, relays, charge controllers, battery accessories and power-management components for maintaining and upgrading your vessel's electrical system.

Whether you're replacing an existing component, improving battery monitoring or building a more capable onboard power system, Roam & Harbor makes it easier to find dependable marine electrical equipment for your next project.

Manage your power. Protect your adventure.

243 products

  • Save $333.90 USD
    Victron Energy

    Victron Multi RS Solar 48/6000 Inverter/Charger [PMR482602020]

    Regular price $1,892.10 USD
    Sale price $1,892.10 USD Regular price $2,226.00 USD

    Multi RS Solar 48/6000 Inverter/ChargerThe Multi RS Solar 48/6000 is a 48V 6kVA inverter/charger with two independent 3kWp PV 450V MPPT trackers for 6kWp total panel...

  • Save $39.11 USD
    Egis Mobile Electric

    Egis Battery Switch - Heavy Duty-Series 600A - Off/On [2500]

    Regular price $59.99 USD
    Sale price $59.99 USD Regular price $99.10 USD

    Battery Switch - Heavy Duty-Series 600A - Off/OnSurface and panel mounting variations allow for flexible installations.Harsh Environment Design with stainless-steel hardware, serrated flange nuts, and high-temperature...

  • Bluewater

    Bluewater On/Off 4 Post Dual Circuit Battery Switch w/o Base - Panel Mount - Red [9800-010-10]

    Regular price $41.25 USD
    Sale price $41.25 USD Regular price $0.00 USD

    On/Off 4 Post Dual Circuit Battery Switch without Base - Panel Mount - RedThis dual circuit battery switch allows you to control two isolated circuits simultaneously with a...

  • Bluewater

    Bluewater Off/1/2/Both Battery Switch - Panel Mount - Red [9800-007-10]

    Regular price $34.37 USD
    Sale price $34.37 USD Regular price $0.00 USD

    Off/1/2/Both Battery Switch - Panel Mount - RedDesigned for dual battery setups, this 1/2/Both selector switch gives you full control to route power from Battery 1,...

  • Bluewater

    Bluewater Off/On Combine Battery Switch w/o Base - Panel Mount - Red [9800-011-10]

    Regular price $40.05 USD
    Sale price $40.05 USD Regular price $0.00 USD

    Off/On Combine Battery Switch without Base - Panel Mount - RedThe Dual Circuit Plus switch builds on the standard dual circuit configuration by adding an emergency...

  • Bluewater

    Bluewater On/Off Switch Battery Switch - Surface Mount - Red [9800-006-11]

    Regular price $27.27 USD
    Sale price $27.27 USD Regular price $0.00 USD

    On/Off Switch Battery Switch - Surface Mount - RedSimple, reliable, and built for tough environments, this On/Off Battery Switch provides secure control of power to a...

  • Bluewater

    Bluewater Off/1/2/Both Battery Switch - Surface Mount - Red [9800-007-11]

    Regular price $38.96 USD
    Sale price $38.96 USD Regular price $0.00 USD

    Off/1/2/Both Battery Switch - Surface Mount - RedDesigned for dual battery setups, this 1/2/Both selector switch gives you full control to route power from Battery 1,...

  • Bluewater

    Bluewater Auto Charging Relay 12V - 140 AMP [9800-7101-00]

    Regular price $77.91 USD
    Sale price $77.91 USD Regular price $0.00 USD

    Auto Charging Relay 12V - 140 AMPThe automatic charging relay (ACR) automatically manages battery charging to ensure maximum efficiency and protect your batteries.Features: Automatic battery management...

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