Dynamite 2S 15C LiPo Battery w/EC3 & JR Connector (7.4V/5200mAh)The Dynamite 2S 7. 4V 15C LiPo Battery comes with all the power and performance expected from the original Reaction line, but now include a QR code directly on the battery label. Scan the QR code with the Dynamite Dashboard Smart Phone App for even quicker and easier setup. In addition, all Reaction 2. 0 hardcase batteries now come in a sleek black color to better match whatever color scheme you choose. Features: Fits most 1 8 and 1 10 scale vehicles