This is the 14.4V 2600mAh Lithium-ion replacement battery pack for the new Godox AD300Pro 300 watt-second fully cordless portable strobe. The rechargeable and interchangeable 2600mAh Lithium battery provides enough for 320 full-power flashes. While the AD300Pro can use the older WB29 batteries made for the AD200, the WB300P is designed to better handle the AD300Pro’s increased power needs.