Amp-hour is the total capacity of energy the battery can contain. The lawn tractor battery at Lowes or Home Depot would have a pretty low amp-hour rating but will easily supply the 12 volts at the required amps to cycle your slide several times. The larger the amp-hour rating the battery has, the longer you can boondock without having to recharge or in slide terms, would provide more slide in/out cycles before having to recharge..
__________________
|