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BB12120R

PRODUCT RANGE

£658.80 GBP
Tax included. Shipping calculated at checkout.

SKU: BB12120R

Family Saturn Series
SKU BB12120
Nominal Input voltage (Side A) 12 V
Nominal output voltage (Side B) 12 V
Power rating (Peak wattage) 1650W (120A current limit)
Bidirectional Yes
Configurable Yes
Remote Control BBR

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.

Key Features & Benefits

✔ Industry-Leading Efficiency (95-98%)

Buck-boost design for optimal power conversion

Current-limiting technology for safer charging

Compatible with Euro 6+ Smart Alternators

✔ Ultimate Flexibility & Safety

6 pre-set battery profiles & user-defined custom profiles

Low-temperature trip protection for Lithium batteries

Ignition feed & vibration sense activation

✔ Advanced Bidirectional Charging

Reverse charging ensures starter battery maintenance

Jump Start Assist mode – emergency engine start capability

✔ EV-Compatible Power Management

Prevents 12V EV battery drain while supporting auxiliary loads

Limits current draw to protect the vehicle’s DC/DC converter

Optimizes charging voltages for 12V & 24V applications

Battery-to-Battery Charger Remote (BBR) (Optional)

Live voltage & current monitoring

Custom charge profile adjustments (Absorption, Float, Time)

Adjustable current limits (100%, 85%, 65%)

Lithium float voltage removal for optimized 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

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.

BB12120R

Reverse Charge permanently on -- all other functions the same.

Requires ignition feed to operate the BB12120 in the normal direction. Once ignition feed is off (0V) the BB12120 shall remain in reverse charger. 

This is idea for those that want to keep their starter battery at 13.4V constanstly. N.B. this shall use a small amount of power from leisure battery. 

 We can ship to the USA

Remote control BBR - Optional remote

- Buck Boost design, offering high efficiency (95-98%)
- Simple installation and setup
- Current limiting charger
- Lithium safe


- BB12120 Bidirectional w/ reverse charging and jump start assistance mode | 12V 120A (1620W output power)


BB12120

Input voltage range                9V-16V
Continuous Rated output power        112A at 14.41V ~1610W
Continuous Rated input power  123A at 13.68V ~1680W
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

Approval             CE | UKCA
                E-Marking E24*10R06/01*3790*00
Cooling method            Thermostatically Controlled
                Variable low speed fan

Dimensions            270mm x 130mm x 73mm
Weight                1.8Kg

 

Instructions / Information pack BB12120

E24 - BB12120 - E-Marking certificate

 

 Paralleling multiple battery to battery chargers together?

There are no problems installing multiple BBs together in parallel to increase the power. For example, you can parallel a BB1240 with a BB12120 to get 160A of charge current. Likewise, BB1270 w/ BB1240 or BB12120 etc.. it does not matter.

Benefits:

1) Redundancy, having multiple DC-DC chargers can help with reduncancy. If one was to get damaged, the other BB(s) shall continue charging.

2) fine tuning the current. As each BB has 3 different power levels, adding multiple BBs together gives you 6, 9, 12 etc.. different power levels. For example, if you wanted 90A you could get a BB1270 and a BB1240 and set the power levels to 85% each via the BBR remote (to give you approximately 90A). Thus, giving you large levels of flexibily to hone in to a specific charge current.

 


 

 Turning off the reverse charging feature, you can! Please watch the video