Based on the typical naming conventions for industrial electronics, the XH-M608 is most commonly identified as a DC Motor Speed Controller (PWM) or a DC-DC Step-up/Down Converter Module.
P (Protection): Relay stays closed only when the voltage is between the lower (P1) and upper (P2) limits.
The XH-M608 Battery Charge and Discharge Module is a versatile digital control board used for protecting batteries from over-charging and over-discharging within a range of DC 6-40V. Primary Operating Modes (P0 Settings)
P-2 (Pulse 2 time).Int (Interval). Set the delay between pulses to 10 ms – 20 ms.The board has two user-set voltage thresholds:
Troubleshooting Common Issues