How long can I leave the Battery Tender Plus battery charger connected to a battery?

We get asked this question all the time.   It is never a good idea to leave your battery charging unmonitored.    Although many chargers say to plug it in and forget about it, there is always a slight chance that something could go wrong.    You are dealing with electricity so we recommend only charging your battery when you are home and unplugging the charger once your battery is fully charged.