It’s capable of charging up to six batteries at once. There are definitely cheaper options, but this is the bells and whistles model. It works at 12Volts/2Amps.
This model is best if you have more than one vehicle and battery. It’s priced among the highest of all options listed because of this capability. It’s good at what it does, but if you just own a couple or one batteries it might not be the best choice for you.
Plan on adding more ATVs or vehicles to your collection? In that case, this will suit you. If not, the Battery Tender Junior featured below is a great choice.