Traction BSU2-50B Battery Support Unit


50A, 13.4V Battery Support Unit


BSU2-50B provides a stable voltage and up to 50 amps (dependant on model) of fully regulated power to prevent loss of charge and damage to the battery.

BSU2-50B can be used with any 12V automotive battery including AGM, GEL and Lithium Iron (LiFePO4).

When the battery is charged the BSU is a regulated power supply to sustain accessory loads and offset parasitic drain.

Can be used in the showroom to maintain the battery charge while power consuming accessories are being demonstrated without fear of power loss.

Reverse polarity protection.

Recommended by JLR UK


This low profile (90mm) BSU2-50B provides a constant voltage to prevent loss of data and possible damage to control units during software updates, and module reprogramming as well as diagnostic processes when in a Key On, Engine Off state.

During diagnostic or programming operations, the vehicle’s systems are operating solely from the battery. Maintaining battery charge during this process is critical.

The status of BSU2-50B is indicated simply by three LED’s – POWER, POLARITY, DEMAND. When all 3 are illuminated, BSU2-50B is supporting the battery.

Designed to be wall or ramp mounted the BSU2 has been designed to meet the needs of the high power consuming vehicle.

Weight 6 kg
Dimensions 320 × 250 × 230 cm
Battery Type

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BSU2-50B – Brochure DOWNLOAD


BSU2-50, CSU2-50, SSU2-50, BSU2-90, BSU2-125 Manual+General+Safety+Precautions_ENGLISH  – DOWNLOAD

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Traction BSU2-50B Battery Support Unit