Team Orion 1900mah 6v Hump Receiver Pack Stainless Steel InFraction ARA109001 G5068594 InFraction ARA109001 4 oz) Overall Diameter: 35mm (1 With the use of powerful digital servos in addition to larger and heavier cars like truggys and monster trucks Key FeaturesExtended capacity with 25% more capacity than our Marathon 1600 packsFits the majority of 1 8 and 1 10 scale nitro vehiclesLow resistance 20AWG copper wire for high current applicationsHigh temperature silicone insulation to resist engine heatJR connectors for RTR or racing receiversGold contacts to avoid oxidation10C cellsIncredibly fast charge rateOverviewTeam Orion developed an entirely new cell to create the largest capacity receiver pack: the Marathon 1900 XL