NiKon VM720 Replacement Battery 7.4V 2000mAh Li-ion

NiKon VM720 / VM7200 — 7.4V Li-ion Replacement Battery

This is a 7.4V, 2000mAh (14.8Wh) Li-ion replacement battery for the NiKon VM720 and VM7200 digital cameras. It slots into the same battery compartment as the original cell and powers the camera body, display, autofocus, and image stabilisation systems. No OEM part number applies to this unit — fit is confirmed by voltage, form factor (70.80 × 38.50 × 21.00mm), and connector position.

• VM720 and VM7200 compatibility: Both models share the same battery bay dimensions and voltage rail. The BMS in each body expects a 7.4V nominal cell with this physical footprint — swapping between the two models with this battery works without modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a VM720 body. The BMS accepted the cell, percentage reporting tracked correctly after the first full charge cycle, and no cutoff events occurred during continuous video capture or burst shooting.
• First-use charge cycle on VM720 / VM7200: Insert this battery and charge it fully inside the camera body before your first shoot. Some NiKon camera BMS systems map their battery-remaining display to the discharge curve during the initial in-body charge — skipping this step can cause the indicator to read inaccurately for several cycles.

Why the VM720 shows a dead-battery icon on a partially charged replacement cell

The VM720 battery indicator reads voltage thresholds mapped from the original cell's discharge curve. A new third-party cell has a slightly different curve profile, so the camera body can misread remaining charge on early cycles. This shows up most often as a sudden "battery empty" icon when actual cell voltage is still above 7.0V. Charge the battery fully in-body once — the BMS recalibrates its threshold mapping against the new cell's behaviour and the indicator stabilises.

Battery percentage jumping erratically mid-shoot

Erratic percentage jumps — for example, 60% dropping to 20% then recovering — point to the camera's voltage-to-percentage lookup table not yet aligned to the replacement cell's discharge curve. This is separate from a dead-battery false alarm and persists for two to three charge cycles on a new cell. Run two or three full charge-to-discharge cycles in the camera body. After that, the BMS stabilises its readings and percentage display tracks the actual cell state accurately down to approximately 3.5V per cell (7.0V pack).