To receive coupon for 50% off one Spektrum 14.8V 5000mAh 4S 100C Smart G2 Hardcase LiPo Battery: IC5 (SPMX54S100H5 ), you must purchase one or more ARRMA MOJAVE 4X4 4S BLX 1/8th Scale Desert Truck (ARA4404T1/T2), between September 28 through October 11. Coupon will be sent via email on October 12th and coupon will be good 10/12-10/18. Not applicable to taxes or shipping fees. No adjustment of previous purchases. This promotion cannot be redeemed for cash or cash equivalent. Prices, availability, and specifications are subject to change without notice.