Yocan - Kodo Cartridge Battery (20CT)What Specifications Make Our Cartridge Battery Powerful Impressive Battery Capacity: With a powerful battery capacity of precisely 400mAhf, charging has never been easier! Furthermore, its Battery Charge Type is Micro USB, which recharges it fully after half an hour. Compatible Threat Type: The 510 threading that joins the battery with the cartridge is universal. It will be compatible with almost all cartridges and atomizers available on the market.