Strato NP-40 Fujifilm Camera Replacement Battery 3.7V 850mAh

Strato DC2007 — 3.7V Li-ion Replacement Battery

This is a 3.7V, 850mAh lithium-ion battery for the Fujifilm DC2007 digital camera, drawing on the NP-40 battery standard used across select Fujifilm compact bodies from the 2000s era. It slots into the same battery compartment as the original cell and connects to the same BMS interface. Voltage and capacity match the OEM specification exactly.

• NP-40 platform fit: Fujifilm used the NP-40 cell across multiple compact camera lines in this era because the 3.7V rail and connector pinout were consistent across bodies sharing the same power management board. The DC2007 uses this same architecture, so the cell communicates with the camera BMS without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on NP-40 compatible hardware and confirmed the BMS handshake completed without rejection flags. Charge acceptance was stable from first cycle, and the protection circuit tripped correctly at the low-voltage cutoff threshold.
• First-cycle initialisation on the DC2007: Run the first full charge through the camera body or OEM charger before shooting. Some Fujifilm BMS implementations from this generation need one complete charge cycle from within the camera to calibrate the battery-remaining indicator to the new cell's discharge curve.

Flash output dropping mid-shoot on a new camera battery

The DC2007's flash capacitor draws a short but sharp current spike every time it recharges between shots. Early in a cell's life, or with a cell that hasn't completed its first calibration cycle, the BMS can interpret that spike as a low-voltage event and briefly throttle output. This causes slower flash recycle times and, in some cases, visibly weaker flash. If you see this on a fresh cell, charge fully via the camera body first, then retest. Capacitor recharge behaviour normalises once the cell has completed two or three full cycles.

Battery percentage jumping erratically on the DC2007 display

Fujifilm's battery indicator on compact bodies from this era maps percentage to fixed voltage thresholds calibrated against the original OEM discharge curve. A replacement cell with a slightly different discharge profile — even at the same rated capacity — can cause the indicator to jump from 80% to 40% in a few shots, then hold steady for a long period. This is a threshold-mapping mismatch, not a cell fault. Complete one full charge-discharge cycle inside the camera body and the indicator will track more consistently against the new cell's actual curve. The cell voltage itself remains within spec throughout.