Sterling Power Saturn bi-directional DC-DC charger (12V / 40A)

Sterling Power BB1240 Saturn Bidirectional 12V to 12V (DC to DC) battery to battery charger rated 40A, featuring reverse charging and jump start assistance mode. With a 550W output power.

Saturn Series – The Ultimate DC/DC Charging Solution

The Saturn Series represents the pinnacle of DC/DC charging technology, offering unmatched efficiency, bidirectional charging, customizability, and reliability. Designed to safely charge, maintain, and optimize battery performance, it excels in high-demand environments with continuous full-load operation, advanced current limiting, and Lithium compatibility.

The Saturn Series is the most efficient, intelligent, and adaptable DC/DC charging system, engineered to optimize battery performance, prevent alternator damage, and future-proof your power setup.

The Saturn series charger is a culmination of everything Sterling have learned in their years of experience with DC/DC charging. What was once a simple idea to allow safe charging and use of a bow-thruster bank has evolved into the most reliable, stable and adaptable way of managing a DC battery circuit - including charging, maintaining and catering to even unique demands.

Sterling are genuinely proud to reveal the Saturn series. Efficiency in the high 90 percentile, unparalleled features (bidirectionality, high efficiency, customisability, continuous running at full load even in adverse conditions), current limiting, lithium suitable - and backed up with support from Sterling. This is the next step of DC/DC charging.

Not only are Sterling the most reliable method of safely and properly charging a lithium battery bank without wrecking your alternator- they are also heavily customisable, ensuring whatever unique battery circumstance you present to them, they are able to support.

Battery-to-Battery Charger Remote BBR (Optional Extra - Our Part Number SPP-BBR) - offering live voltage & current monitoring, custom charge profile adjustments (Absorption, Float, Time), adjustable current limits (100%, 85%, 65%), lithium float voltage removal for optimised performance.

Scalability & Redundancy

Parallel multiple BBs for increased charge capacity

Fine-tune power output for precise current control

Ensures redundancy in case of unit failure

Self recovering protections:

Under voltage protection

Input over voltage protection

Output over voltage protection

Over current protection

Charge over temperature

E-Marked!

Cooling method: Thermostatically Controlled

Variable low speed fan