About this replacement
Lenovo Yoga C750 14 ITL — 15.36V Li-Polymer Replacement Battery (L19C4PDC)
This 15.36V, 4600mAh (70.66Wh) lithium-polymer battery fits the Lenovo Yoga C750 14 ITL, Yoga 14C ITL 2021, Yoga 14C 2021, and Yoga 7 14 series convertible laptops. It replaces OEM part numbers L19C4PDC, L19M4PDC, and L19L4PDC. The cell matches the original connector pinout and BMS communication protocol required by this platform.
- Yoga C750 / Yoga 14C ITL platform fit: These models share the same 15.36V four-cell Li-Polymer architecture, identical connector housing, and the same EEPROM-based BMS handshake. One cell serves the full model range listed above without hardware modification.
- Bench tested on actual hardware: We ran this cell through charge, discharge, and BMS communication checks on the Yoga 14C ITL platform. The BMS handshake completed correctly, charge acceptance registered at the expected rate, and no fault codes were thrown during the test cycle.
- First-cycle calibration after install: After fitting this cell, run the laptop down to hibernate cutoff on battery power alone, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on this platform.
BIOS reporting poor battery health immediately after replacement
The Lenovo BIOS reads health data stored in the old cell's EEPROM and compares it against the new cell's reported values. A fresh cell has a different cycle count and charge history in its EEPROM, so the BIOS flags a mismatch as "poor health" or "replace battery." This is a firmware read error, not a fault with the new cell. Running one full discharge-to-hibernate then a full uninterrupted charge clears the learn cycle and corrects the health status in both the BIOS and Lenovo Vantage.
Laptop shuts down at 20–30% charge shown on screen
This happens when the fuel gauge IC has not yet calibrated against the new cell's actual voltage curve. The gauge was mapped to the old, degraded cell and now misreads the new cell's state of charge. Under full CPU and display load, voltage drops faster than the uncalibrated gauge expects, triggering a low-voltage shutdown before the displayed percentage reaches zero. Run two complete discharge-to-hibernate and full-charge cycles — by the second cycle the gauge IC re-maps to the new cell and the shutdown stops occurring above 15V open-circuit.