Kyocera Finecam S3R 7.4V 2600mAh Replacement Battery 29518

Kyocera Finecam S3R — 7.4V Li-ion Replacement Battery (29518)

This 7.4V, 2600mAh Li-ion battery replaces the original pack in the Kyocera Finecam S3R compact digital camera. It fits the Finecam S3R and is cross-referenced under OEM part numbers 29518, 38403, 46607, 52030, C8872A, and EI-D-LI1. Capacity figures are taken directly from product data at 19.24Wh.

• Finecam S3R compatibility: These OEM part numbers all reference the same cell format, voltage rail, and connector pinout used across Kyocera's Finecam S3R platform. The BMS handshake voltage matches what the camera's charge controller expects at power-on — no modified firmware or adapter required.
• Bench tested on actual hardware: We cycled this pack through power-on, shutter actuation, and sustained video capture sequences. The BMS held charge delivery steady through lens motor draw and flash capacitor recharge events without tripping into protective cutoff.
• Post-storage initialisation on the Finecam S3R: If this battery has been in storage, insert it and allow the camera to complete a full boot sequence before shooting. The Finecam S3R maps battery state at startup — skipping a complete initialisation cycle causes the low-battery indicator to trigger early during the first extended session.

Finecam S3R shutting down during flash or continuous burst shooting

The Finecam S3R draws a sharp current spike each time the flash capacitor recharges. On a degraded or deeply discharged replacement pack, this spike can push instantaneous draw past the BMS overcurrent threshold. The BMS interprets that as a fault condition and cuts output immediately. This is not a camera fault — it is the protection circuit doing its job. Fully charge the pack to 8.40V before first use and allow at least two full charge-discharge cycles to stabilise cell impedance.

Camera powers on but shuts off the moment USB data transfer to PC begins

USB data transfer adds a sustained combined load — storage controller, sensor, and USB bus power — on top of baseline camera draw. A pack sitting below roughly 7.0V under load cannot sustain that combined current and the camera cuts out. This is a voltage sag issue, not a charge percentage issue — the display may show partial charge right before shutdown. Charge the pack fully and confirm resting voltage reads at least 8.2V with a multimeter before initiating a transfer session.