This VB20 Lithium-Ion Battery from Godox is a replacement or spare cell for the V350S flash. It is rated to supply 2000mAh at a voltage of 7.2V, resulting in a power of 14.4Wh. When fully charged, the battery can provide more than 500 full-power pops and allows for recycling times of 1.7 seconds or lower.
What's in the box
Godox VB20 Lithium-Ion Battery for V350S Flash (7.2V, 2000mAh)