Review on ⚡️ Efficient TOPAC 3.5/7A 6/12 Volt Automatic Car Battery Charger: Ideal for Automotive, Motorcycle, Boat & Marine, RV, Toys, Power Tools, Lawn & Garden Battery Systems by Derek Evans

I think they sent me a broken one but some people here in the reviews have had the same experience so I have to return it and choose a better brand (possibly Schumacher) . Here's what happened: Battery connected correctly, nothing came except 12.4V blinking. Then I pressed Mode (the only button that can be pressed), the Err1 code kept blinking erratically. Separately, repeated several times, the same thing happens. I have used many chargers and nothing has worked like this. Luckily Revane lets me back in so let's go.