Fujifilm NP-80 FinePix 1700z Compatible Battery 3.7V 2400mAh

Fujifilm FinePix 1700z / 2700 / 2900z / 4800 Zoom Series — 3.7V Li-ion Replacement Battery (NP-80)

The NP-80 is a 3.7V Li-ion cell rated at 2400mAh (8.88Wh). It fits the Fujifilm FinePix 1700z, 2700, 2900z, and 4800 Zoom, along with twelve additional FinePix models that share the same battery compartment and connector. If your original NP-80 no longer holds a charge, this is the direct replacement.

• FinePix NP-80 platform compatibility: All listed FinePix models run the same 3.7V rail with an identical physical connector and battery compartment depth. The BMS handshake on these bodies is voltage-threshold based, not chip-authenticated, so the camera reads cell state through voltage alone — no firmware pairing required.
• Bench tested on actual hardware: We ran the cell through full charge and discharge cycles on a FinePix body. The BMS accepted the cell without rejection, charge termination triggered correctly at 4.2V, and low-voltage cutoff engaged at the expected floor without tripping prematurely under flash load.
• First-cycle calibration on FinePix bodies: Before shooting, run one complete charge cycle through the OEM charger or inside the camera body itself. FinePix cameras map their battery-remaining indicator to a learned discharge curve — skipping this step can cause the indicator to read inaccurately until the first full cycle completes.

Flash recycling slowing down before the battery indicator drops

The FinePix flash capacitor draws a sharp recharge current between shots. As the cell ages or sits near the lower end of its charge, internal resistance rises enough to slow that capacitor recharge — even when the battery gauge still shows bars. The camera body interprets this as normal operation and won't warn you. If flash recycling time increases noticeably mid-shoot, check cell voltage directly; anything below 3.6V under load will show this behaviour. A full recharge cycle restores normal recycling speed if the cell is otherwise healthy.

Battery percentage jumping erratically on the FinePix display

The FinePix indicator maps remaining charge to a fixed voltage-threshold table calibrated to the original NP-80 discharge curve. A new cell with a slightly different discharge profile can cause the indicator to skip or jump — particularly between the 50% and 20% range where the curve diverges most. This is a display calibration issue, not a cell fault. Run two full charge-to-discharge cycles inside the camera body and the indicator will re-anchor to the new cell's actual curve. After two cycles, readings should stabilise within one bar of actual charge state.