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 $70.95 USD
    Victron Energy

    Victron SmartSolar MPPT 150/70 - TR Solar Charge Controller [SCC115070211]

    Regular price $402.05 USD
    Sale price $402.05 USD Regular price $473.00 USD

    SmartSolar MPPT 150/70 - TR Solar Charge ControllerFeatures: Bluetooth Smart built-in The wireless solution to set-up, monitor, update and synchronise SmartSolar Charge Controllers.  Ultra-fast Maximum Power...

  • Save $96.97 USD
    BEP Marine

    BEP 275A Cont Motorized Dual Operation VSS (Voltage Sensitive Switch) - Deutsch Connector [701-MDVS-D]

    Regular price $244.99 USD
    Sale price $244.99 USD Regular price $341.96 USD

    275A Cont Motorized Dual Operation VSS (Voltage Sensitive Switch) - Deutsch ConnectorThese Voltage Sensitive Switches (VSS) automatically sense connected battery bank voltages and provide optimal, efficient...

  • Save $93.00 USD
    BEP Marine

    BEP Emergency Parallel Switch - 12/24V - 275A [80-701-0018-00]

    Regular price $201.99 USD
    Sale price $201.99 USD Regular price $294.99 USD

    Emergency Parallel Switch - 12/24V - 275A This Motorized Switch offers remotely activated, high current, emergency parallel connection suitable for emergency starting of large engines (up to...

  • Save $43.05 USD
    Victron Energy

    Victron Orion-TR Smart 12/12-30 30A (360W) Isolated DC-DC or Power Supply [ORI121236120]

    Regular price $243.95 USD
    Sale price $243.95 USD Regular price $287.00 USD

    Orion-TR Smart 12/12-30A (360W) Isolated DC-DC Charger or Power SupplyThe Orion-Tr Smart isolated DC-DC charger serves as a DC-DC battery charger or a power supply (also...

  • Save $20.00 USD
    Blue Sea Systems

    Blue Sea 7635 m-LVD Low Voltage Disconnect [7635]

    Regular price $120.99 USD
    Sale price $120.99 USD Regular price $140.99 USD

    m-LVD Low Voltage DisconnectSenses low battery voltage and automatically disconnects devices to save power for starting or to preserve battery lifeA dead battery is one of...

  • Save $24.00 USD
    Blue Sea Systems

    Blue Sea 7615 ATD Automatic Timer Disconnect [7615]

    Regular price $140.99 USD
    Sale price $140.99 USD Regular price $164.99 USD

    ATD Automatic Timer DisconnectAdjustable time or voltage based battery disconnect automatically shuts off devices to preserve battery power 12V signal triggers relay to connect battery power...

  • Save $77.00 USD
    Blue Sea Systems

    Blue Sea 7620 ML-Series Automatic Charging Relay (Magnetic Latch) 12VDC [7620]

    Regular price $303.99 USD
    Sale price $303.99 USD Regular price $380.99 USD

    7620Manual Control: NoCoil Voltage: 12V DC Combines battery banks during charging and isolates under discharge 500 Ampere continuous rating suitable for use with large battery banks,...

  • Save $33.96 USD
    Digital Yacht

    Digital Yacht BM100 Battery Monitoring Solution [ZDIGISSBM100]

    Regular price $405.99 USD
    Sale price $405.99 USD Regular price $439.95 USD

    BM100 Battery Monitoring SolutionThe BM100 is a complete system comprising SmartShunt and the veKonvert NMEA 2000 interface. It is part of Digital Yacht’s iSeaSense range of...

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