About this replacement
Custom Battery Packs 2ICP11/24/38 — 7.4V Li-Polymer Replacement Battery
This is a 7.4V, 460mAh (3.4Wh) lithium-polymer battery pack built to the 2ICP11/24/38 specification. It replaces depleted OEM packs in compact portable electronics that use this cell configuration. Physical dimensions are 40.40 × 23.80 × 11.00mm — confirm these against your original pack before ordering.
- 2ICP11/24/38 cell format: This designation describes two cells in series, each approximately 11mm × 24mm × 38mm. Devices specifying this format require that exact footprint and series configuration to fit the battery bay and meet the voltage rail the host circuit expects.
- Bench tested on actual hardware: We cycled this pack through charge and discharge on the bench. The BMS held cutoff at the correct thresholds and the cell voltages balanced within expected tolerance across both cells under load.
- First-cycle calibration for fuel-gauge devices: If your device shows a capacity indicator or percentage readout, run one full charge-to-discharge cycle after installing. Integrated fuel gauges reference stored cell history — a calibration cycle resets that baseline against the new cells so the readout tracks accurately.
Pack not accepted by device after swap
Some devices run a voltage range check or BMS handshake before allowing operation. A freshly shipped lithium-polymer pack sits at storage voltage — typically 3.7–3.8V per cell, around 7.4–7.6V combined — which can fall outside what the host circuit expects at power-on. The fix is straightforward: connect the pack to a charger before attempting to power the device. Once the cells reach approximately 8.0V or higher, most host circuits will accept the pack and resume normal operation.
Pack not reaching full charge on the first cycle
On the first charge of new lithium-polymer cells, the charge IC often applies a reduced current during the initial conditioning phase. This can make the pack appear to stop short of a full charge or terminate earlier than expected. This is not a fault — it clears after one complete charge-discharge cycle. Run the device until it signals low battery, then charge fully to 8.4V before relying on the pack for normal use.