Ricoh DB-50 Caplio R1 Replacement Battery 3.7V 1600mAh

Ricoh Caplio R1 / R1S / R2 / RZ1 — 3.7V Li-ion Replacement Battery (DB-50)

This is a 3.7V, 1600mAh Li-ion replacement for the Ricoh DB-50 battery. It fits the Caplio R1, R1S, R2, and RZ1 compact digital cameras. Physical dimensions are 52.00 × 28.40 × 14.50mm — same form factor as the original cell.

• Caplio R1 / R1S / R2 / RZ1 platform fit: These four Caplio models share the same battery bay geometry and voltage rail. The DB-50 slot, contact polarity, and 3.7V operating threshold are identical across the series, so one cell covers all of them.
• Bench tested on actual hardware: We cycled this cell through the Caplio body and monitored BMS handshake on first charge. The camera accepted the cell, voltage held steady through the discharge curve, and the BMS did not trip at any point during testing.
• First-install charge cycle: Insert the cell and charge it fully inside the camera body or OEM charger before your first shoot. Ricoh's battery-remaining display calibrates its percentage map during that initial charge cycle — skipping it can cause the indicator to read inaccurately from the start.

Why the Caplio R1 rejects a new DB-50 cell on first install

The Caplio R1's firmware runs a voltage-presence check when a new cell is inserted. If the cell rests at storage voltage — typically around 3.6V — rather than a fully charged 4.2V, the camera may flag it as depleted or refuse to power on. This is a firmware threshold check, not a hardware fault. Placing the cell in the OEM charger for one full cycle before inserting it into the body clears the check on almost every unit.

Battery percentage jumping around on the Caplio display

The Caplio R-series maps its fuel gauge to a discharge voltage curve calibrated for the original DB-50 cell. A new replacement cell's discharge curve is slightly different during the first few cycles, which causes the percentage indicator to skip or jump — particularly between 80% and 40%. This is not a defective cell. Run two to three full charge and discharge cycles through the camera body and the gauge will track the new cell's curve accurately. After conditioning, the display should step down smoothly without sudden drops.