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Sterling Power Battery-to-Battery Charger

  • Output Voltage: 24 Volt DC, (2) 12 Volt Banks (In Series), (1) 24 Volt Bank
  • Input Voltage: 12 Volt DC, Max. Output Current: 25 Amps @ 24 Volts
  • 4-Step Charging Profile Extends Battery Life by Ensuring Full Charge
  • Item #: 
    Sterling Power
    Model #: 


    Shipping Weight: 
    9.40 Lbs.
    List Price: 
    Our Price:
    Status:    null In Stock

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    • The Sterling Power Battery-to-Battery Charger enables fast and effective charging of a 12 or 24 Volt DC auxiliary bank of batteries from your starting battery
    • Provides a calculated 4-step charging profile to your batteries without being plugged into shore power
      • 4-step battery charging profile extends battery life by ensuring a full charge
    • Provides a full multi-stage charge rate that recovers house battery bank 5x faster than using a standard alternator
    • Constantly monitors and ensures that starting battery on input side is never under- or over-charged
      • The Sterling Power Battery to Battery Charger monitors the engine start battery, it will not start until the battery voltage exceeds 13 volts, then it waits for 2.5 minutes to ensure that some power is replaced after the engine is started
      • It then loads the engine battery down to no less than 13 volts
      • This enables the engine battery to still receive a charge and ensures the alternator works at its full potential
    • Quick and Easy to Install. Installation requires no modification to the primary electrical system, resulting in no vehicle warranty issues as you are not connected to the main system. Runs on DC input voltage
    • By monitoring and then controlling the charge level of the engine battery connected to its input side, the Battery-to-Battery charger is able to provide the output batteries a four-step charging algorithm at amperage levels near full alternator output capacity
      • This allows the flexibility of charging of your auxiliary batteries while underway or while your engine battery charger is plugged in at the dock
    • Ability to mix on board battery types


    • Sterling Power Model No. BB122440
    • 12 Volt to 24 Volt 50 Amp Battery-to-Battery Charger
    • Battery Types: Flooded lead acid, Gel, AGM
    • Battery Banks: 1 (24 Volt DC Bank) or (2) 12 Volt DC Banks (In Series)
    • Input Voltage: 12 Volt DC
    • Output Voltage: 24 Volt DC
    • Max. Output Current: 25 Amps
    • Dimensions: 10" L x 11" W x 3" H

    For further details see Data Sheet for this product



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