NiKon EN-EL15 Coolpix D7000 Replacement Battery 7V 2000mAh

NiKon Coolpix D7000 / D800 Series — 7V Li-ion Replacement Battery (EN-EL15)

This 7V, 2000mAh Li-ion battery replaces the EN-EL15, EN-EL15A, EN-EL15B, and EN-EL15c cells used across NiKon's DSLR lineup. It fits the Coolpix D7000, D800, D800E, and more than two dozen additional compatible bodies. Voltage and cell chemistry match OEM spec exactly.

• D7000 and D800 series compatibility: These bodies share the same battery bay dimensions, 7V voltage rail, and EN-EL15 connector footprint. The BMS handshake protocol is consistent across the EN-EL15 revision chain, so one cell covers all variants from the original EN-EL15 through the EN-EL15c.
• Bench tested on actual hardware: We ran this cell in a D800 body and a D7000. The BMS accepted the cell after one full charge cycle through the camera body. Voltage under autofocus and burst-drive load held stable with no cutoff events recorded.
• First-install charge cycle on NiKon bodies: Insert the cell and charge it to 100% through the camera body or OEM charger before your first shoot. NiKon's battery-remaining indicator maps to a specific discharge curve — skipping this step causes the percentage readout to jump erratically rather than decline smoothly.

Why the D800's battery percentage jumps instead of counting down evenly

NiKon camera bodies track remaining charge by mapping voltage thresholds against a known discharge curve for the OEM cell. A new replacement cell has a slightly different internal resistance profile than a well-cycled original. Until the body logs a complete charge and discharge cycle, its fuel gauge algorithm has no calibration baseline. After one full cycle — charge to 100%, shoot until the body signals low battery — the readout stabilises and tracks accurately.

Camera body shows "no battery" or rejects the cell on first insert

This happens when the cell voltage sits below the body's minimum recognition threshold after storage. Replacement cells often ship at partial charge, and some NiKon bodies require the cell to present at least 6.8V before the BMS completes its authentication check. Insert the battery into the OEM charger first and charge for at least 15 minutes before placing it in the camera body. If the body still rejects it, power cycle — remove the cell, reinsert, and power on — which resets the BMS check sequence.