Dynamite Speedpack2 6-Cell NiMh Battery w/EC3 Connector. These sport packs feature capacity ratings ranging from 900mAh to 5100mAh, making it easier than ever to choose the right NiMH 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.