Bear Rootz Inc. offers replacement USB chargers in bulk, for the batteries we sell. Chargers come in two different versions: the 510-threaded one that screws into the battery where the cartridge goes and a regular USB with a micro connector plugs into the bottom of the battery. Depending on the batteries you carry, one or both of these types may be needed. All of our wholesale USB chargers can be used interchangeably with the batteries we sell. These are ideal replacement chargers and are good to have on hand for your consumers to purchase as an added accessory to the products you offer! Don’t see what you’re looking for or unsure what you need? Reach out to firstname.lastname@example.org to get more information on replacing hardware.