Parkit360 Powered Trailer Dollies are an essential tool for many industrial and commercial businesses, as well as the owners of RVs, boat trailers, travel trailers, and a grand plethora of other applications. We offer the very best 12 volt Group 24 (75 Ah capacity) battery to put the power into all of Parkit360's trailer dollies. Whether the Parkit360 Force 5K, Force 10K, or the Transformer 15K dolly, we have you covered with our magnificent heavy-duty battery.