1ICP/90/60/90 Replacement Battery 3.7V 6000mAh Li-Polymer

Custom Battery Pack 1ICP/90/60/90 1S1P — 3.7V Li-Polymer Replacement Battery

This is a 3.7V, 6000mAh Li-Polymer replacement battery for portable electronic devices that originally use the 1ICP/90/60/90 1S1P cell configuration. It delivers 22.2Wh in a single-cell 1S1P layout measuring 90.20 x 60.00 x 8.50mm. Verify your original battery's part number and physical dimensions against these specs before ordering.

• Single-cell 1S1P architecture: This pack runs one cell at 3.7V nominal — no series or parallel cell groups. Devices using this configuration rely on the host device's charge IC to manage cut-off, so the BMS on this pack handles protection only: overcurrent, over-voltage, and short-circuit. There is no internal balancing circuit because none is needed in a 1S layout.
• Bench tested on actual hardware: We cycled this pack through charge, full-load discharge, and protection-trip tests on the bench. The BMS tripped cleanly at overcurrent threshold and recovered without latching. Charge acceptance from flat to full completed without thermal anomaly.
• First-cycle calibration: After installing, run one complete charge-discharge cycle before trusting any capacity indicator. Integrated fuel gauges in devices using this pack need to measure the new cells across a full cycle to recalibrate their state-of-charge algorithm — skipping this step can cause the indicator to read inaccurately by a wide margin.

Pack not accepted by device after swap

Some devices run a voltage-range check or BMS handshake at power-on before allowing operation. If the pack ships at storage voltage — typically 3.6V to 3.65V — it may fall just outside the device's acceptance window. Connecting the pack to its charger first, before inserting it into the device, brings it above the recognition threshold. Charge to at least 3.8V, then reinsert and power on.

Pack not reaching full charge on the first cycle

On new Li-Polymer cells, the host device's charge IC often applies a reduced current rate during the first charge cycle — this is a conditioning behaviour, not a fault. The pack may terminate early or show a lower-than-expected charged voltage on that first pass. Discharge partially and charge again; the second cycle will typically complete to the full 4.2V cutoff. No intervention is needed beyond repeating the cycle.