Review on ⚡️ EPEVER MPPT Charge Controller 30A 12V/390W, 24V/780W, Common Negative Grounding, Maximum PV 100V LCD Display for Lead-Acid Sealed/Gel(AGM)/Flooded and Lithium Battery Charging (MPPT 30A) by Leo Puente

do not use an electric screwdriver because the screws are weak and tear off the head, besides these excellent devices I have bought 4 over the years, 3 are currently running in 3 rows of plates a lithium battery, but if you are using lithium make sure you buy a separate USB or Wi-Fi cable as the settings will need to be changed. If you use lead acid it's fine, just plug it in and turn it on. Sorry the screen is hard to see and you really need an extra MT50 screen to control it as the built in LCD has limited functions and is really easy to install.