Ricoh DB-80 R50 Replacement Battery 3.7V 680mAh

Ricoh R50 — 3.7V Li-ion Replacement Battery (DB-80)

This is a 3.7V, 680mAh Li-ion cell built to the DB-80 specification. It fits the Ricoh R50 compact digital camera. Slot it into the battery compartment exactly as the original — same footprint, same connector orientation.

• Ricoh R50 compatibility: The R50 uses a single-cell 3.7V Li-ion pack with a low-current BMS suited to the compact sensor and modest flash draw of this camera. The DB-80 form factor and contact layout are fixed — no other Ricoh cell from a larger body will fit this slot.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on camera-class test equipment. The BMS held the 3.7V nominal rail without voltage sag at flash trigger events, and the protection circuit tripped correctly at low-voltage cutoff rather than forcing a hard shutdown mid-shot.
• First-cycle conditioning on the R50: Run the first charge directly in the R50 body or the OEM DB-80 charger. Some Ricoh compact bodies need one in-camera charge cycle before the battery-remaining indicator maps correctly to the new cell's discharge curve.

Why the R50 shows a dead battery icon on a replacement cell that still has charge

The R50 reads battery state by mapping the cell's discharge curve against fixed voltage thresholds stored in firmware. A new replacement cell may have a slightly different resting voltage profile than the original, causing the indicator to read low even when the cell is not depleted. This is a calibration mismatch, not a faulty cell. Run one complete charge-discharge cycle in the camera body and the indicator typically stabilises to an accurate reading.

Battery percentage jumping erratically on the R50 display after fitting a new cell

Erratic percentage readings on the R50 happen when the camera's voltage-to-percentage lookup table doesn't yet match the new cell's discharge curve. The indicator samples terminal voltage at intervals and converts it to a percentage — a fresh cell with a flatter discharge curve can cause the reading to jump between values. This is not a sign of a defective battery. Charge the cell fully via the OEM charger, then discharge it completely in-camera once to let the firmware re-anchor its voltage thresholds.