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 $81.00 USD
    Blue Sea Systems

    Blue Sea 7713 ML-RBS Remote Battery Switch w/Manual Control Release - 12V [7713]

    Regular price $321.99 USD
    Sale price $321.99 USD Regular price $402.99 USD

    ML-RBS Remote Battery Switch with Manual Control Auto-Release - 12V Manual override knob provides an added level of safety allowing control with or without power and...

  • Save $34.00 USD
    Blue Sea Systems

    Blue Sea 7765 L-Series Solenoid Switch - 150A - 12/24V DC [7765]

    Regular price $203.99 USD
    Sale price $203.99 USD Regular price $237.99 USD

    7765 L-Series Solenoid Switch - 150A - 12/24V DCIdeal for switching DC subpanels, thrusters, windlass, inverters, and other medium-amp DC loads.Features: Continuous duty, SPST - Normally...

  • Blue Sea Systems

    Blue Sea 2146 ML-Series Remote Control Contura Switch - ON-OFF-ON [2146]

    Regular price $35.99 USD
    Sale price $35.99 USD Regular price $0.00 USD

    2146Pole/Throw: SPDTAction: ON OFF ONFeatures:Vibration, shock, thermoshock, moisture and salt spray resistantWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to...

  • Save $12.95 USD
    Perko

    Perko 9611DP Compact Medium Duty Main Battery Disconnect Switch [9611DP]

    Regular price $85.99 USD
    Sale price $85.99 USD Regular price $98.94 USD

    Compact Battery Selector & Main Disconnect SwitchesIgnition ProtectedFor use with 12, 24 and 32 volt marine electrical systemsHigher rating than popular 8500 series switchesSame bolt patterns...

  • Sea-Dog

    Sea-Dog Battery Tray w/Clamp f/27 Series Batteries [415057-1]

    Regular price $14.75 USD
    Sale price $14.75 USD Regular price $0.00 USD

    Battery Tray with Clamp for 27 Series Batteries Heavy duty Battery Tray for size #27 batteries. Includes screw down clamp and four 1/4"x1" PH screws with washers....

  • Sea-Dog

    Sea-Dog Battery Box Strap Brackets - 54" [415094-1]

    Regular price $7.95 USD
    Sale price $7.95 USD Regular price $0.00 USD

    Battery Box Strap & Brackets - 54" Battery Box Strap & Brackets includes a woven polypropylene strap, injection molded nylon buckle, two brackets, and four #8 FH...

  • Save $0.96 USD
    Sea-Dog

    Sea-Dog Mini Battery Switch Key w/Removable Knob - 32V 100A [422732-1]

    Regular price $38.99 USD
    Sale price $38.99 USD Regular price $39.95 USD

    Mini Battery Switch Key with Removable Knob - 32V & 100AThese Mini Battery Switches feature a removable knob for extra security. To remove, simply twist the...

  • Sea-Dog

    Sea-Dog Battery Terminal Covers - Red/Back - 1/2" [415110-1]

    Regular price $9.55 USD
    Sale price $9.55 USD Regular price $0.00 USD

    Battery Terminal Covers - Red/Back - 1/2" These Battery Terminal Covers are designed to insulate integral marine wing nut terminals protecting battery cables from corrosion and shorting....

Load more