About this replacement
Custom Battery Packs 1ICP10/34/50 — 3.7V Li-Polymer Replacement Battery
This is a 3.7V, 1800mAh (6.66Wh) Li-Polymer replacement battery carrying OEM part number 1ICP10/34/50. It measures 53.00 × 34.00 × 9.80mm and matches the physical and electrical spec of the original cell. Check your existing battery label for 1ICP10/34/50 before ordering — fit model data is not published for this pack.
- OEM part number match: This pack is identified by its IEC battery code, not a device name. The 1ICP10/34/50 designation encodes one cell, 34mm width, 50mm length — any device referencing that code uses a cell within this footprint and voltage range.
- Bench tested on actual hardware: We cycled this pack through charge and discharge using a controlled load. The BMS held cutoff voltage correctly at the low end and charge termination fired at 4.2V as expected on a standard Li-Polymer charge IC.
- First-cycle calibration: If your device has a fuel gauge or capacity indicator, run one full charge-discharge cycle after installing. Fuel gauge ICs tied to the original cells lose their calibration data on swap and need one full cycle to re-anchor the state-of-charge curve to the new cells.
Pack running below rated voltage on first use
Li-Polymer cells ship at storage voltage — typically 3.6V to 3.85V — not at full 4.2V charge. If your device shows low battery immediately after install, this is expected. The cell has not degraded. Charge fully before the first use to bring the pack to its rated operating range, then discharge normally.
Device not accepting the pack after swap
Some devices run a voltage window check or BMS handshake on power-up. If the pack is at storage voltage, it may fall outside the acceptance range and the device will appear dead or loop on startup. Connect the device to its charger first — let the charge IC bring the pack above 3.8V, then power on. If the device uses firmware-level authentication, one full charge via the OEM charger is usually enough to clear the rejection state.