Sterling Power 12V to 12V DC-DC Charger 70A Output BB1270

The Sterling Power BB1270 is a cutting-edge 12V to 12V DC-DC charger, delivering a robust 70A (930W output power) charging capability. Engineered for high efficiency and versatility, the BB1270 integrates seamlessly with both conventional and electric vehicle (EV) systems, making it a perfect solution for a wide range of applications. Its bidirectional charging capability and optional remote control make it a standout choice for modern electrical systems.

Key Features:

  • High-Efficiency Charging: Utilizes Buck Boost technology to achieve an efficiency rate of 95-98%, ensuring optimal power conversion and minimal energy loss.
  • Bidirectional Charging and Jump Start Assistance: Offers reverse charging and jump start assistance modes, enhancing its utility and versatility.
  • Lithium Compatibility: Safely charges lithium batteries, incorporating a low-temperature trip feature to protect against unsafe charging conditions.
  • Smart Alternator and Euro 6+ Compatibility: Ensures seamless integration with the latest vehicle electrical systems, including those with smart alternators.
  • Easy Installation: Designed for straightforward setup, facilitating hassle-free integration into existing setups.
  • Versatile Operation Modes: Supports ignition feed or vibration sense modes, catering to different installation and operational requirements.
  • Comprehensive Protection: Equipped with 6 self-recovering protections to safeguard against common electrical issues.

EV Compatibility:

The BB1270 stands out for its compatibility with electric vehicles, offering significant benefits:

  • Prevents EV Battery Drain: Isolates the EV's 12V battery from the auxiliary system, ensuring the vehicle's essential battery remains charged.
  • Optimized Current Management: Tailors the charging current to the system's needs, preventing overload and ensuring efficient power distribution.
  • Accurate Charge Voltages: Adjusts to the correct charging voltages for auxiliary batteries, essential for maintaining battery health and longevity.

Benefits of Installation:

  • Isolation and Protection: Ensures that the 12V EV battery is protected from draining, maintaining the vehicle's readiness and operational reliability.
  • Efficient Power Use: Provides a balanced charging solution that optimizes the use of the vehicle's DC-DC converter output, enhancing overall system efficiency.
  • Flexible Power Output: The BB1270 adapts its charging strategy based on the electrical demand of the vehicle's system and the auxiliary battery's capacity.

Technical Specifications:

Feature Specification
Input/Output Voltage 12V/12V
Maximum Output 70A (930W)
Efficiency 95-98%
Compatibility Lithium, Smart Alternator/Euro 6+, EV systems
Charging Modes Ignition Feed, Vibration Sense
Preset Battery Types 6
Protections 6 Self Recovering
Additional Features Reverse Charging, Jump Start Assistance


Designed for durability and performance, the Sterling Power BB1270 DC-DC charger is an essential upgrade for any vehicle or marine system, ensuring reliable and efficient charging across a range of battery types and configurations.

Feature Specification
Input voltage range 9V-16V
Continuous Rated input power 71.75A at 13.61V ~976W
Continuous Rated output power 64A at 14.51V ~930W
Quiescent current 5mA
Efficiency rating 95-98%
Self recovering protections Under voltage protection, input over voltage protection, output over voltage protection, over current protection, charge over temperature
Operational Temperature -20 Deg C -> 60 DegC
Cooling method Thermostatically Controlled, Variable low speed fan
Approval CE | UKCA, E-Marking 24*10R06/01*3789*00
Dimensions 200mm x 130mm x 56mm
Weight 1.0Kg
Model # BB1270
Brand Sterling Power
Shipping Weight 1.0000kg
Shipping Width 0.200m
Shipping Height 0.056m
Shipping Length 0.130m
Shipping Cubic 0.001456000m3
Unit Of Measure ea

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