Reaction2 14.8V 5000mAh 4S 50C LiPo, Case: DeansKey Features Fits most 1 8 and 1 10 scale vehicles 3C charge rating for quick, safe recharging Hard plastic case for increased durability and reliability One year limited warranty beginning at date of purchase Reaction 2. 0 Dynamite's new Reaction 2. 0 batteries come with all the power and performance you've come to expect from the original Reaction line, but now include a QR code directly on the battery label. You can scan the QR with the Dynamite