Hawk-Woods DV-MC2 Replacement Battery 7.4V 10400mAh Li-ion

Hawk-Woods DV-MC2 / DV-C1 Series — 7.4V Li-ion Replacement Battery

This 7.4V 10400mAh (76.96Wh) lithium-ion cell replaces the internal battery in Hawk-Woods DV-MC2, DV-MC4, DV-MC8, and DV-C1 power units. These are professional camera power adapters used on broadcast and cinema rigs to run cameras and accessories from V-lock or Anton Bauer-mounted battery systems. Capacity figures come from the product data, not web estimates.

• DV-MC2, DV-MC4, DV-MC8, DV-C1 fit: All four units share the same internal battery bay geometry, voltage rail, and BMS communication protocol — one cell fits the full range without modification or adapter plates.
• Bench tested on actual hardware: We cycled this cell under sustained load simulating continuous camera power draw. The BMS held charge distribution steady across the full discharge curve, with no premature low-voltage cutoff at the protection threshold.
• First-cycle acceptance on Hawk-Woods units: After fitting, run one complete charge cycle through the Hawk-Woods unit itself before connecting to a camera rig. Some internal BMS systems in this product line need that initial cycle to correctly map the new cell's discharge curve for accurate remaining-power display.

Why the DV-MC2 reads low capacity immediately after a fresh cell install

The DV-MC2's onboard fuel gauge calibrates against a stored discharge curve from the previous cell. A new cell with a different internal resistance profile causes the gauge to read conservatively — sometimes showing 60–70% on a fully charged replacement. This is not a fault with the cell. One full charge-discharge cycle through the unit resets the fuel gauge's reference points. After that cycle, the display tracks the actual 10400mAh capacity accurately.

Power output dropping mid-shoot with no low-battery warning

This happens when the BMS triggers a protective cutoff due to instantaneous current spike — common when a camera body and a high-draw accessory like a monitor or wireless transmitter are powered simultaneously from the DV-MC unit. The cell's protection circuit reads the combined draw as an overcurrent event and cuts output before the fuel gauge registers low voltage. Disconnect one accessory, then reconnect the Hawk-Woods unit to reset the BMS. Confirm the cell resting voltage reads above 7.2V before resuming the full accessory load.