Team Orion 1900mah 6v Nimh Flat Receiver Pack Aluminium Caster Blocks • Compatible with Wraith and SC4231 • Compatible with Wraith and Ridgecrest Lighter and stiffer than nylon propellers for increased performance 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 Your Rx pack is the fuel of your radio installation and only top quality cells should be used to avoid loss of signal