Battery charger module for XH-M604 with 6-60V DC lithium battery protection Voltage Tolerance: +/-0.1V<br> Application Fields: 6-60V storage battery<br> Size: 81 x 54 x 18mm<br> Using :<br> Set Starting Voltage:in normal display voltage state,press the button will display start charging voltage;long press for 3s the digital tube will flash;you can start or stop button to set starting up charge voltage value<br> Set Stop Voltage:in normal display voltage state,press the button will display stoping charge voltage;long press the button for 3s the digital tube will flash;you can start or stop button to set stoping charge voltage value<br> Factory Reset:in power on state press the start/stop button at the same time,digital tube will display 888;that represents factory reset settings<br> Colour: blue<br> Material: PC+metal<br> Package Contents:<br> 1 x Battery Charger Control Module<br> Only the above package content, other products are not included.<br> Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.