The 5900 race hardcase are the next generation of LiPo battery technology with amazing 50C performance - you will not believe it before you try it. Specially developed for maximum power delivery and unbelievable low internal resistance. Mounted in a red transparent hardcase to keep the cells from being damaged during use. In addition to that the hardcase features sub-c bulges for perfect and secure chassis fit into any 1/10th scale onroad or offroad car. Size 139x47x25.1mm Cubic capacity 5900 Voltage Input 7.4V - 2S C-rate 50C Style 6-cell Sub-C Stickpack