GODOX VB30 Replacement Battery 7.4V 3000mAh Li-ion

GODOX V1 Pro / V860 III Series — 7.4V Li-ion Replacement Battery (VB30)

The VB30 is a 7.4V, 3000mAh Li-ion cell that powers the GODOX V1 Pro, V850 III, V860 III, and MF-R76 round-head flash units. It feeds the internal capacitor charging circuit directly, so cell health directly affects recycle speed and output consistency. This listing covers the standard 3000mAh variant at 22.2Wh.

• V1 Pro / V860 III platform fit: These flash units share the same VB30 form factor, connector pin-out, and BMS handshake protocol. Swapping between compatible models is straightforward — the cell communicates charge state to each body the same way.
• Bench tested on actual hardware: We cycled this cell through repeated full-power capacitor recharges on a V860 III body. The BMS held voltage steady across the first 20 full-power shots with no cutoff event and no thermal trip.
• First-use power cycle on the V1 Pro: After fitting this cell, power the flash fully off, wait five seconds, then power back on from cold. The BMS handshake initialises correctly only from a cold start — inserting the cell into a body that is already powered can leave the charge state unread and cause a false low-battery indicator.

Why the V1 Pro steps down output after 10–15 full-power shots

At full power, the V1 Pro's capacitor draws a high recharge current from the cell in a very short window. A degraded or low-capacity cell cannot sustain that current without voltage sagging below the BMS threshold. When that happens, the flash body interprets it as a protection event and steps the output down to reduce draw. A fresh cell with healthy internal resistance handles the burst current without triggering that cutoff. If you see stepped-down output early in a shoot, check cell voltage — it should read above 7.2V at rest between shots.

Recycle time noticeably slower on a brand-new VB30

New Li-ion cells ship with slightly elevated internal resistance until the electrode chemistry settles. On a capacitor-charging device like the V860 III, higher internal resistance directly lengthens recharge time between shots. This is not a fault — it corrects itself after approximately five full charge-discharge conditioning cycles. Run the flash through five full sessions with complete discharges and full recharges before drawing any conclusions about cell performance.