Sterling Power Waterproof 12V to 12V DC-DC Charger 70A Output BBW1270

The Sterling Power BBW1270 is an advanced waterproof version of the 12V to 12V DC-DC charger, delivering a powerful 70A (930W output power) charging capability with the added benefit of being fully waterproof. This makes it an ideal solution for applications in challenging environments where moisture and water exposure are common. Its high efficiency, versatility, and compatibility with both conventional and electric vehicle (EV) systems, alongside its bidirectional charging capability and optional remote control, position the BBW1270 as a superior choice for modern electrical systems, especially in marine, outdoor, and rugged applications.

Key Features:

  • Waterproof Design: Ensures reliable operation in moist and water-exposed environments, enhancing durability and versatility.
  • High-Efficiency Charging: Leverages Buck Boost technology for an efficiency rate of 95-98%, ensuring optimal power conversion with minimal energy loss.
  • Bidirectional Charging and Jump Start Assistance: Provides reverse charging and jump-start assistance modes, increasing utility and flexibility.
  • Lithium Compatibility: Offers safe charging for lithium batteries with a low-temperature trip feature for protection against unsafe charging conditions.
  • Smart Alternator and Euro 6+ Compatibility: Guarantees seamless integration with the latest vehicle electrical systems, including smart alternators.
  • Easy Installation: Simplified setup design facilitates straightforward integration into existing systems, even in demanding conditions.
  • Versatile Operation Modes: Supports ignition feed or vibration sense modes, suitable for various installation and operational needs.
  • Comprehensive Protection: Features 6 self-recovering protections to shield against common electrical issues.

EV Compatibility: The BBW1270 is particularly notable for its suitability with electric vehicles, offering advantages such as preventing EV battery drain by isolating the 12V battery from the auxiliary system, optimizing current management, and ensuring accurate charge voltages for auxiliary batteries.

Benefits of Installation:

  • Isolation and Protection: Keeps the 12V EV battery safe from draining, ensuring the vehicle remains operational and reliable.
  • Efficient Power Use: Balances the charging process to maximize the efficiency of the vehicle's DC-DC converter output.
  • Flexible Power Output: Adapts charging strategies to meet the electrical demand and capacity of the auxiliary battery.

General 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, Waterproof Design


The Sterling Power BBW1270 DC-DC charger stands out for its robust performance and waterproof capabilities, making it an indispensable upgrade for vehicles and marine systems in environments where moisture and water exposure are a concern, ensuring reliable and efficient charging across various battery types and setups.

Model # BBW1270
Brand Sterling Power
Shipping Weight 1.0000kg
Shipping Width 0.200m
Shipping Height 0.056m
Shipping Length 0.130m
Shipping Cubic 0.001456000m3

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