XRAY’s Supercharged 1200 NiMH 2/3 6-cell micro pack features super high capability specially-treated 1200mAh batteries assembled in a pack to supply the greatest power, unmatched top rate, and unmatched run-times the M18. The battery pack will fit standard M18 composite chassis and the graphite chassis. The pack includes standard micro plug, therefore it will effortlessly fit any speed controller. For highest performance we suggest using top-quality XRAY XMC300 speed controller.