Did you also read that it WON'T Charge the Battery Only keep it Charged.I bought this "automatic float charger", and when reading instructions I found a CAUTION 'TO PREVENT BATTERY DAMAGE"--DO NOT USE ON GEL LEAD ACID OR AGM TYPE BATTERIES. The box or the ad never mentioned that. And I wondered why they are being sold at close-out price. LOL I can use it on my lawn mower and scooter.
And it has to be a fully charged Battery before you put it on it.