Kemo Electronic M148A 12V Battery Guard Module

The Kemo Electronic M148A is an automatic 12 V battery protector that prevents accumulators from suffering deep discharge. It automatically disconnects connected devices when voltage drops too low and reconnects when healthy voltage returns. Ideal for makers, automotive hobbyists, and electronics learners running 12 V battery-powered systems.

Deep discharge prevention

This accumulator saver protects 12 V car and auxiliary batteries from total discharge by switching off loads such as coolers, heaters, and radios in time. Power is automatically restored once the battery returns to normal voltage.

Adjustable switching thresholds

The module features an adjustable interrupting voltage ranging from approximately 10.4 V to 13.3 V. It resets and re-engages connected devices when the voltage rises approximately 0.8 V (± 0.3 V) above the configured threshold.

Efficient power switching

Equipped with a power MOS transistor in the negative line, the unit handles up to 10 A without cooling and up to 20 A with additional cooling. It maintains an ultra-low standby current consumption of under 0.7 mA when switched off and under 1.6 mA when active.