About this replacement
Casio Exilim EX-ZR50 / EX-ZR55 / EX-ZR60 / EX-FC500 — 3.7V Li-ion Replacement Battery (NP-160)
This is a 3.7V, 1050mAh Li-ion replacement cell for the Casio NP-160 battery. It fits the Exilim EX-ZR50, EX-ZR55, EX-ZR60, and EX-FC500 compact cameras. Dimensions match the OEM cell at 44.65 × 37.10 × 6.50mm, so it seats flush in the battery compartment without modification.
- EX-ZR and EX-FC500 platform compatibility: All four models share the same NP-160 battery bay, contact layout, and 3.7V power rail. The BMS handshake on each body reads the same voltage profile, so one cell works across the full group without adapter or firmware workaround.
- Bench tested on actual hardware: We cycled this cell through the EX-ZR50 body with burst shooting and video recording active. The BMS accepted the cell on first insertion, held steady voltage during high-speed burst sequences, and cut off cleanly at the low-voltage threshold without the camera freezing or throwing an error.
- First-charge cycle on the EX-ZR50: Run one full charge inside the camera body or OEM charger before your first shoot. Some Exilim bodies need that initial charge cycle to map the new cell's discharge curve correctly — skipping it can cause the battery-remaining indicator to read inaccurately from the start.
Flash recycling lag on the EX-ZR50 with a new replacement cell
The EX-ZR50's flash capacitor pulls a sharp current spike each time it recharges between shots. If the replacement cell has not been through a full charge cycle, its internal resistance reads slightly higher than the OEM baseline, and the capacitor takes longer to reach full charge voltage. This shows up as a longer-than-normal pause between flash-enabled shots in burst mode. One complete charge-discharge cycle usually brings internal resistance in line and restores normal flash recycling speed.
Battery percentage jumping erratically on the display after fitting the replacement
The EX-ZR50 maps battery percentage against a voltage-threshold table calibrated to the OEM cell's discharge curve. A new third-party cell discharges along a slightly different curve, so the camera's indicator can jump — say from 60% to 30% in a few shots — without reflecting actual remaining charge. This is a display calibration issue, not a cell fault. Run two to three full charge cycles through the camera body, and the indicator stabilises as the BMS learns the cell's actual discharge profile. Check that the indicator holds steady across a full charge before committing the camera to a critical shoot.