1. When the battery has undervoltage, disconnect the load and connect the charger. When the battery has overvoltage, disconnect the charger and connect the load. 2. This battery charge controller has the function of adjustable parameters and memory function during power failure. 3. The control voltage is 10V-60V, with high accuracy of 0.1V. 4. This battery charge controller is suitable for storage batteries, lithium batteries, etc. 5. This charge controller protects against battery undervoltage, overcharging, and controls the load. ----------------------- Specifications: This battery charge controller has the function of adjustable parameters and memory function during power failure. When the battery has undervoltage, disconnect the load and connect the charger. When the battery has overvoltage, disconnect the charger and connect the load. Features: * When the battery has undervoltage, disconnect the load and connect the charger. When the battery has overvoltage, disconnect the charger and connect the load. * This battery charge controller has the function of adjustable parameters and memory function during power failure. * The control voltage is 10V-60V, with high accuracy of 0.1V. * This battery charge controller is suitable for storage batteries, lithium batteries, etc. * This charge controller protects against battery undervoltage, overcharging, and controls the load. Specifications: Model: YX815 Control Voltage: 10V-60V Control Current: 20A Control Accuracy: 0.1V Voltage Error: ±0.1V Scope: Storage battery, lithium battery, etc. Packaging: Antistatic bag Size: 7.9 x 4.3 x 2.8cm/3.11 x 1.69 x 1.10 inches Installation Size: 76 x 39.5mm/2.99 x 1.56 inches Weight: 44g Voltage Setting Method: In setting mode (digital tube flashes) S1: Upward voltage S2: Downward voltage S1 Undervoltage Setting Button (Charging Start, Load Stop): 1. Under normal display voltage, press the S1 button to display the charging start (load stop) voltage value. 2. Long press the S1 button, the digital light tube flashes, and set the charging start voltage (load stop) value using the S1 and S2 buttons. S2 Overvoltage Setting Button (Charging Stop, Load Start): 1. Under normal display voltage, press the S2 button to display the charging stop (load start) voltage value. 2. Long press the S2 button, the digital light tube flashes, and set the charging stop (load start) voltage value using the S1 and S2 buttons. Restore Factory Settings: Under the condition of electricity, press the S1 and S2 buttons simultaneously, and the digital tube displays 888, indicating that the original factory setting has been successfully restored. (Note: When S1 cannot increase the voltage, set S2 first, and when S2 cannot decrease the voltage, set S1 first) Package Includes: 1 x Battery Charge Controller Note: Please note that the new type and old type of this product will be shipped randomly, and please make sure you don't mind before ordering. -----------------------