Review on ⚡️ SCHUMACHER SP2 Automatic Battery Charger/Maintainer: Reliable Power Solution in a Single Pack by Anthony Lopez

Mine doesn't work out of the box. I tried this with a 12V SLA battery that was about 80% charged. All I get are red and green lights flashing at the same time regardless of whether it's connected to a battery or not (although speeds vary). I also tried it with a different 12v and a 6v battery and didn't see any difference. The specific blink code isn't listed in the manual so I have no idea what's wrong. When I plug in my multimeter I see that it draws 200mA from the battery regardless of the AC supply and never charges it.