DC 6-40V Battery Charger and Discharger Protection Relay Module
This digital battery protection relay module is designed to monitor voltage and control charging or discharging circuits. It supports a DC 6-40V power supply, detects voltage across a DC 0-60V range and displays readings on its built-in LED screen.
The module provides under-voltage and over-voltage control with automatic cut-off functionality. NC, COM and NO relay contacts allow connection to compatible external equipment, while the UP, DOWN, SET and STOP buttons provide straightforward local operation.
It is suitable for indoor battery charger control, battery discharger protection and voltage monitoring projects. The 220V shown in the wiring illustration supplies a separate charger; do not connect mains voltage directly to the module input.
Package Content
1 × Battery charger discharger protection relay module














