Review on 🌞 ALLPOWERS 20A Solar Charger Controller: Intelligent Regulator for 12V/24V Solar Panel Battery with USB Port Display by Victor Correa

20A solar charge controller works as expected. I also liked that the price was low. I found out what the codes mean: According to the instructions: b01 - sealed lead acid. b02 is a gel cell and b03 is a flooded or open type (an old car battery where you keep an eye on the liquid level in the cells). that if you have a similar controller, the codes will be transmitted. I would find something written by the manufacturer.