About this replacement
Custom Battery Pack 1ICP/47/43/55 — 3.7V Li-Polymer Replacement Battery
This is a 3.7V, 1300mAh (4.81Wh) Li-Polymer battery pack built to the 1ICP/47/43/55 specification. It fits compatible Coolpad smartphones where the original pack has failed or no longer holds a usable charge. Dimensions are 56.00 × 42.80 × 4.60 mm — confirm against your existing pack before ordering.
- Coolpad platform fit: Coolpad devices using the 1ICP/47/43/55 pack share a common voltage rail at 3.7V nominal and use the same physical footprint with a direct flex-connector tab. The BMS on these models checks both cell voltage and connector pinout at startup — a physically mismatched pack will be rejected before the boot sequence completes.
- Bench tested on actual hardware: We cycled this pack through charge and discharge on the bench, monitoring BMS communication at each stage. The protection circuit engaged correctly at low-voltage cutoff, and the charge IC accepted the pack without flagging an authentication fault.
- First-cycle calibration on Coolpad fuel gauge: After installing this pack, run one full charge-discharge cycle before trusting the on-screen battery percentage. Coolpad's integrated fuel gauge recalibrates its state-of-charge tracking against the new cells during that first cycle — skipping it can leave the indicator reading 15–20% off for the first few days of use.
Pack not accepted by the device after swap
Some Coolpad models run a voltage range check at power-on before fully initialising the battery interface. If the replacement pack arrives at storage voltage — typically around 3.5V — the device may refuse to boot or show a blank screen. Connect the charger immediately after installation and allow the pack to reach at least 3.7V before attempting to power on. Once the voltage clears the threshold, the handshake completes and the device boots normally.
Battery percentage stuck or jumping on first day of use
A newly installed Li-Polymer pack has no charge history for the fuel gauge to reference, so the percentage readout can stall, jump, or drop suddenly in the first few charge cycles. This is a calibration gap, not a faulty cell. Charge the device fully to 100% without interruption, then use it down to auto-shutdown, and repeat once more. After two full cycles the gauge stabilises and tracks accurately against the 1300mAh capacity of this pack.