The unit is not for charging your vehicle’s dead battery. It’s best as a solar battery maintainer that keeps your battery charged to lengthen its life expectancy.
Also, it is suggested to unplug the charger at night, just in case the blocking diode doesn’t prevent all reverse discharge.
The 30-Watt Basic Off-Grid Solar Panel Kit is ideal for a variety of DC applications, including RVs, boats, 12-Volt battery charging and LED lights. Made with high-efficiency MONO crystalline solar cells for years of service, this solar kit is easy to install and virtually maintenance free. An anodized aluminum frame and a sealed junction box make the panel weatherproof for outdoor use.
1 x 30W Solar Panel
1 x10A Charge Controller
1 x Crocodile Clips (power cord 1.5m)
1 x Charge Controller User Manual