Nissin NiMH Replacement Battery Cluster for Power Pack Pro 300

The Nissin Digital NBC300 NiMH Replacement Battery Cluster is for use with the Power Pack Pro 300 high-power battery pack. This rechargeable NiMH battery cluster can be used as a replacement for one that has expired or can be kept charged up in your camera bag to use as a spare for uninterrupted shooting when constant power to your flash is required.