Sanyo UR-121 iDshot IDC-1000 Replacement Battery 7.4V 2000mAh

Sanyo iDshot IDC-1000 Series — 7.4V Li-ion Replacement Battery (UR-121)

This is a 7.4V, 2000mAh Li-ion replacement battery for the Sanyo iDshot IDC-1000, IDC-1000Z, IDC-1000ZU, and Xacti NV-HD500 digital cameras. It replaces OEM part numbers UR-121, UR-121D, UR-124, UR-124D, and NVP-D6. Cell dimensions are 71.70 × 37.60 × 20.40mm — the same form factor as the original.

• IDC-1000 series and Xacti NV-HD500 compatibility: These models share the same battery bay geometry, connector pinout, and 7.4V power rail. The BMS handshake protocol is identical across the range, so one cell covers the full group without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on compatible hardware. The BMS accepted the cell without fault codes, held the voltage curve through depletion, and tripped the low-voltage cutoff at the correct threshold before deep discharge damage could occur.
• First-use charge cycle for iDshot cameras: Insert the battery and charge it fully inside the camera body before shooting. The IDC-1000 BMS maps the cell's discharge curve during this first cycle — skipping it can cause the battery-remaining indicator to read inaccurately throughout the cell's life.

Dead battery indicator showing on a partially charged replacement cell

The IDC-1000 estimates remaining charge by comparing real-time voltage against a stored discharge curve calibrated to the original cell. A new third-party cell has a slightly different voltage-versus-capacity profile, so the camera can misread a partially charged cell as empty and refuse to operate. This is a calibration mismatch, not a fault with the cell. Resolve it by charging the replacement fully in-camera before first use, which forces the BMS to re-map the curve against the actual cell behaviour.

Battery percentage jumping erratically on the IDC-1000 display

If the battery percentage indicator skips between readings — jumping from 80% to 40% without warning — the camera's fuel gauge is losing track of the cell's state of charge. This happens when the voltage threshold table built into the camera firmware doesn't align cleanly with the new cell's discharge slope. Run one full charge-to-depletion cycle entirely within the camera body to let the BMS re-anchor its reference points. After that cycle, the indicator should stabilise and track accurately down to the 3.0V per-cell cutoff.