NiKon EN-EL15 Coolpix D7000 Replacement Battery 7V 1400mAh

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

This is a 7V, 1400mAh Li-ion replacement for the NiKon EN-EL15 battery cell. It fits the Coolpix D7000, D800, D800E, and over 28 additional NiKon DSLR bodies that share the EN-EL15 form factor. The cell also crosses to EN-EL15A, EN-EL15B, and EN-EL15c variants used across the same camera lineup.

• EN-EL15 platform compatibility: NiKon unified the EN-EL15 cell across its mid-to-pro DSLR range because these bodies share the same battery bay dimensions, contact pinout, and BMS communication protocol. The A, B, and C suffix revisions added minor firmware reporting changes — the physical cell and voltage rail stayed the same.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles in a D800 body and a D7000 body. The BMS handshake completed on both. Battery percentage reporting initialised correctly after one full charge cycle from inside the camera body.
• First charge cycle on NiKon DSLR bodies: Charge this cell inside the camera body using the OEM MH-25 charger or equivalent before your first shoot. NiKon's BMS maps the discharge curve against the cell during the first in-body charge — skipping this step can cause the battery-remaining indicator to read inaccurately for the first several uses.

Why the D7000 and D800 battery indicator reads differently with a new EN-EL15 cell

NiKon's battery gauge maps percentage to specific voltage thresholds built from the OEM cell's discharge curve. A new replacement cell has a slightly different discharge profile — it may hold above 3.8V per cell longer before dropping steeply, which causes the indicator to sit at a reported level longer than expected before falling quickly near depletion. This is a calibration behaviour, not a fault. After two to three full charge and discharge cycles inside the camera body, the BMS recalibrates its threshold mapping and the display stabilises.

Camera body warm under sustained video recording on the D800

Extended video recording on the D800 pulls current simultaneously from the imaging sensor, EXPEED processor, autofocus motor, and image stabilisation system. That combined draw raises cell temperature faster than still photography does. If the body feels warm and the camera pauses recording, the BMS has triggered a thermal protection cutoff — this is expected behaviour. Let the body cool for five minutes, then resume. Check that nothing is blocking the battery compartment vent area, and avoid recording in direct sunlight on hot days where ambient temperature is already above 35°C.