About this replacement
Lenovo ThinkPad E570 — 15.28V Li-ion Replacement Battery (01AV414)
This is a 15.28V, 2050mAh (31.32Wh) Li-ion replacement battery for the Lenovo ThinkPad E570 series notebook. It covers a wide range of E570 variants including the 20H5A01PCD, 20H5A005CD, and 20H5005PCD build codes. OEM part numbers 01AV414 through 01AV418 and SB10K97571 through SB10K97575 are all covered by this cell.
- ThinkPad E570 variant compatibility: All listed E570 variants share the same 15.28V four-cell architecture, connector pinout, and BMS handshake protocol. Lenovo used multiple OEM part numbers across regional SKUs — the underlying cell spec is identical across all of them.
- Bench tested on actual hardware: We cycled this battery on an E570 mainboard and confirmed the BMS handshakes correctly with the EC firmware. The charge controller accepted the cell without flags, and the BIOS battery status page reported expected voltage and Wh values after two full cycles.
- BIOS learn cycle after installation: After fitting this cell, run one full discharge down to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears on the battery status page after any cell swap.
BIOS reporting poor battery health immediately after fitting a new cell
The ThinkPad EC reads health data from EEPROM registers stored on the battery's BMS board — not from the cell itself. When a new cell is installed, those registers may not match what the EC expects for a fresh battery, triggering a "poor health" or "replace battery" flag straight away. This is not a fault with the new cell. Running the BIOS battery learn cycle rewrites the baseline and clears the flag. On the E570, access this via Lenovo Vantage under Power — Battery Gauge Reset.
Laptop shuts down at 20–30% charge showing on screen
This happens when the fuel gauge IC has not yet calibrated against the new cell's actual discharge curve. The gauge reports 25% remaining while the cell voltage has already dropped below the EC's cutoff threshold under full CPU and display load. The old calibration data from the previous cell is still in memory and no longer applies. Fix this by completing two full uninterrupted charge and discharge cycles — the fuel gauge IC recalibrates against the new cell and the percentage readout stabilises above 3.0V per cell.