RLD 18.5v 6700 Mah Li-ion Battery

I installed one of these in each of four Aristocraft SD-45 6 axle, 4 motor Locomotives this past weekend and then took them for a spin on my layout. The four Locomotives were MU'd and were pulling the following USAT rolling stock: 6xAutoracks, 7x4 Bay Covered Hoppers, 6xModern Tank Cars & 4x Cabeese. A 3.75 lb. drawbar pull was required, the lights were on, all are equipped with Phoenix sound and all have onboard cooling fans(which were running as it was 88F outside)for the Revolution boards Well, they ran for 4 hours!!! Far superior performance than what I've seen from the Cordless Renovation units. If you like long run times at a reasonable price, it would be hard to beat the 5S2P's!