Features 1.When the battery voltage is as low as 10.5V to 11.5V, the power control board will automatically start charging 2.When the voltage is as high as 14.4V to 14.8V, the product will turn off the power 3.The red indicator light is on during charging. When the battery is fully charged, the relay is closed and the 220V input terminal ends, the indicator light will go out to save energy 4.This is a battery charging control board, 12V battery is fully charged and cut off to prevent overcharging 5.Control module come with stable structure, excellent performance and long service life Specification Item Type: Battery Charging Control Module Model: XH-M601 Charging Method: 12V battery Adjustment: VR1: When the battery voltage reaches 14.4V to 14.8V, the charger will stop charging and the relay will close. (turn off the voltage setting: CW adjustment is lower, CCW adjustment is higher.) VR2: When the battery voltage drops to 10.5V to 11.5V, the charger will start charging and the relay will open. (starting voltage setting: turn down CW, turn up CCW.) Characteristic: Switch-On Voltage: 10.5V-11.5V Disconnect Voltage: 14.4V-14.8V Wiring: You need to connect the 220V line to the COM terminal of the relay, and put the OFF terminal (output) into the charger. The charger must use a full-bridge rectifier output mode. The output voltage of DC is about 13.8V-14.4V Package List 1 x Battery Charging Control Module