XH-M604 DC 6V To 60V 30A Storage Battery And Lithium Battery Charge Control Module Protect SwitchParameter:Voltage: DC 6V-60VOutput current: 30AHow to use:1. Set the startup voltage:under the normal display voltage state, press the start voltage button once to display the start charging voltage. Press and hold the start button Compatible with 3 seconds, the digit flashes, and the start charging voltage value is set by the start and stop buttons.2. Set the stop voltage:in the normal display voltage state, press the stop voltage button once to display the stop charging voltage. Long press the stop button Compatible with 3 seconds, the digit flashes, and the charging voltage value is stopped by the start and stop buttons.3. Restore factory settings:press and hold the start / stop button at the same time when the power is on, the digital display 888, that means restore the factory settings.Package included:1 X XH-M604 storage battery and lithium battery charge control moduleWe have commodity security services. If the product you received has quality problems, please feel free to contact us, we can provide you with a return service.