The GHOST MV1 has a high-power battery pack which is rechargeable and replaceable. Using the included USB cable, we recommend an initial overnight charge in order to get the longest life from the battery. Subsequent charges will be quicker, however due to the battery’s high capacity it will still take several hours to recharge fully from empty. We strongly recommend the purchase of a Fast Charger with the device to dramatically shorten charging times and to enable users to top-up the battery frequently and quickly.