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Providing the ultimate in Nickel-Metal Hydride technology, Dynamite® Speedpack™ 2 sport packs are an extremely affordable choice for everyone from RC hobbyists to sport-level racers. They 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.