Feature:1. Battery Control Module: Universal CNC charger battery control module, 30A automatic battery control module2. 1.5V‑120V Battery: The charging control module is suitable for 1.5V‑120V batteries (including lithium batteries, polymer batteries, etc.)3. Extend Battery Life: This battery control module can extend battery life, automatically power off, save power and rest assured4. Easy to Use: This is an easy to use and safe battery control module, which can achieve long lasting performance5. Application: Battery charging control board can be used for car generator, solar energy, wind generator, electric car charging, etc.How to Use:In the state of setting the voltage value (the nixie tube is flashing), the start button plays the role of the up button, the stop button plays the role of the down button1. Set the starting voltageIn the normal display voltage state, press the start button once to display the start charging voltage. Long press the start button, the nixie tube flashes, and set the start charging voltage value through the start and stop buttons.2. Set the stop voltageIn the normal display voltage state, press the stop button once to display the start charging voltage. Long press the stop button, the nixie tube flashes, and set the start charging voltage