This is a Dynamite 6 Cell 7.2V NiMH "SpeedPack2" Flat Battery Pack with EC3 Connector, capable of providing the ultimate in Nickel-Metal Hydride technology. These sport packs feature capacity ratings ranging from 1800mAh to 5100mAh, making it easier than ever to choose the right Ni-MH battery for your vehicle. Additionally, Speedpack 2 batteries are fully compatible with the Dynamite Dashboard app. The Dynamite Dashboard app seamlessly integrates the batteries with the Dynamite Passport Series of chargers and brings real-time monitoring to your mobile device.