ALLPOWERS solar charge controller can automatically manage the working of solar panel and batteries in solar power systems. It is easy to set up and operate. For protecting the lifespan of your battery, once the voltage of the battery drop below 8V, the solar charge controller will turn off automatically (LCD will be unavailable at the same time). It's a very Intelligent unit for the solar panel.
Solar Charge Controller should connect the battery first, then connect the solar panel, and finally the load! The disassembly sequence is contrary to the wiring order.