Features 1、Thick circuit board for long-lasting performance. 2、Easy to wire and safe to use. Adjustable parameter and memory retention function. 3、Suitable for various storage batteries and lithium batteries. 4、Automatic charging and discharging, safe to operate. 5、Used for car generators, solar power, wind turbines, electric vehicles charge. Specification Descriptions: This battery charging controller module, features automatic charging, automatic power off, suitable for battery use of 6V-60V, and use for car generators, solar power, wind turbines, electric vehicles charge. Feature: Thick circuit board for long-lasting performance. Easy to wire and safe to use. Adjustable parameter and memory retention function. Suitable for various storage batteries and lithium batteries. Automatic charging and discharging, safe to operate. Used for car generators, solar power, wind turbines, electric vehicles charge. Specification: Name: Battery Charge Control Module Control Current: ≤10A Control accuracy: 0.1V Application: various storage batteries and lithium batteries Size: Approx. 7*4.8*1.7cm / 2.8*1.9*0.7inch Weight: 33g In the state of normal stage(digital tube flash) Resetting: In the common state of power-on, press the starting key and stopping key simultaneously, digital tube display 888, resetting is successfully completed. Settings: When the starting value can not be added, please adjust the stop value. Q&A: Question: How many voltages are batteries fit? Answer: Question: Why did the module not display after connecting the charger? Answer: Question: Answer: Because the limiting start value is less than the stop value. If you want to adjust the start value, you should adjust the stop the value first, vice versa. Question: The relay has a sound of flapping. Digital tube or indicator light is flashing. Answer: Question: What mode can control auto-cycle charge? Can it charge while using?Can the flow be limited ? Answer: It can charge while using. Module control mode is only controlled shut off and open, module can not limit flow. The charge current depends entirely on your charger current. Question: Can 12V battery charge 24V? Or can 48V battery charge 12V? Answer: Package Included: 1 x Charge Control Module Package List