Review on 🌞 SUNSUL 20W 12V Solar Panel Kit Battery Maintainer Trickle Charger, Waterproof 5A 12V/24V PWM Solar Charge Controller, Adjustable Mount Bracket – 20 Watt with Accessories by Joseph Scalea

The solar charger seems to work well. It kept my RV's backup battery charged as expected, even in low light. However, when I tried to mount the footrest to the loading plate, the holes in the footrest were too small for the screws?! I had to use zip ties to mount. And I agree with other reviewers that whoever wrote the instructions page really should have a better command of English. And "extension" is not the same. This is a connector for direct connection to the inverter if required.