Fujifilm NP-95 FinePix F30 Compatible Battery 3.7V 1800mAh

Fujifilm FinePix F30 / X100S Series — 3.7V Li-ion Replacement Battery (NP-95)

The NP-95 is a 3.7V, 1800mAh Li-ion cell that powers several Fujifilm compact and fixed-lens cameras. It fits the FinePix F30, FinePix F31fd, X100T, X100S, and five additional models sharing the same form factor and connector. Capacity figures come from the product data, not estimated values from third-party sources.

• FinePix and X100 series compatibility: These models share the NP-95 footprint, connector pin layout, and BMS handshake protocol. The cell dimensions — 49.60 × 35.20 × 10.80mm — match the OEM battery bay exactly, so no adapter or modification is needed.
• Bench tested on actual hardware: We ran this cell in an X100S body and cycled it through full charge and discharge sequences. The BMS accepted the cell without fault codes, and the protection circuit tripped correctly at the low-voltage cutoff threshold.
• First-install charge cycle on X100-series bodies: Insert the battery and charge it fully inside the camera body using the OEM USB or AC charger before your first shoot. The X100-series BMS maps battery-remaining percentage to the cell's discharge curve during this first in-body cycle — skipping it can cause the indicator to read inaccurately from the start.

Why the FinePix F30 shows a dead-battery icon on a freshly charged NP-95

The F30's fuel gauge reads voltage against a stored discharge curve calibrated to the original cell. A new replacement arrives in a partial state of charge with a resting voltage that may not align with the camera's expected range at that charge level. The body can misread this as a depleted cell and lock out shooting. Charge the battery fully in the F30 body, power the camera off, then back on — this forces the BMS to re-read the resting voltage and accept the cell.

Battery percentage jumping erratically on the X100T or X100S display

The X100T and X100S map the remaining-charge indicator to fixed voltage thresholds. A new Li-ion cell's discharge curve can sit slightly outside those thresholds, causing the percentage to drop sharply then plateau, or jump between readings mid-shoot. This is a calibration mismatch, not a fault with the cell. Run two full charge-discharge cycles through the camera body — the BMS recalibrates against the actual curve, and percentage display stabilises by the third cycle.