Ricoh DB-30 RDC-i700 Replacement Battery 3.7V 1850mAh

Ricoh RDC-i700 — 3.7V Li-ion Replacement Battery (DB-30)

This is a 3.7V, 1850mAh Li-ion replacement for the Ricoh DB-30 battery. It fits the RDC-i700 compact digital camera. Voltage and cell dimensions match the original: 70.70 × 19.75 × 20.35mm.

• RDC-i700 fit: The RDC-i700 runs a single-cell 3.7V Li-ion architecture. The DB-30 form factor is specific to this body — the cell dimensions and connector orientation are fixed. No other Ricoh battery series slots into this compartment.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a compatible camera body. The BMS accepted the cell without fault codes. Voltage held steady across image capture and LCD-active states.
• First-use charge cycle on the RDC-i700: Charge this battery fully through the camera body before your first shoot. Some compact camera BMS controllers need one in-body charge cycle to calibrate the battery-remaining indicator to the new cell's discharge curve — skipping this step can cause the indicator to read inaccurately from the start.

Dead battery indicator on a partially charged DB-30 replacement

The RDC-i700's battery gauge maps voltage thresholds to segment display levels. A new third-party cell has a slightly different discharge curve than the original Ricoh cell. The camera reads the early portion of that curve as low voltage and throws the empty indicator prematurely. One full in-body charge cycle re-anchors the threshold mapping to the new cell. After that cycle, the indicator tracks accurately.

Battery percentage jumping erratically mid-shoot

Erratic percentage jumps — say, 60% dropping to 20% then recovering — point to a voltage-sag mismatch between the cell and the camera's indicator logic. The RDC-i700 samples terminal voltage to estimate charge state, not coulomb counting. A new cell under load sags briefly, which the camera misreads as a steep drop. Charge the battery to 100% via the camera body, then discharge it fully once — this single conditioning cycle smooths out the display behaviour.