The Leaf solar charger is for the 12 volt system, which is separate from the main battery. I can't really conclude if it is a gimmick or not but my 12 volt bat

The Leaf solar charger is for the 12 volt system, which is separate from the main battery. I can't really conclude if it is a gimmick or not but my 12 volt battery has not yet died. To be fair, the car also charges the 12 volt battery when it is plugged in.