About this replacement
Lenovo ThinkPad T470 — 11.25V Li-Polymer Replacement Battery (01AV419)
This is an 11.25V, 2050mAh (23.06Wh) Li-Polymer battery for the Lenovo ThinkPad T470 14-inch business laptop. It replaces OEM part numbers 01AV419, 01AV420, 01AV421, SB10K97576, 01AV489, SB10K97577, and SB10K97578. Install it when the original cell no longer holds adequate charge for mobile work sessions.
- ThinkPad T470 series compatibility: These T470 variants — including the 20HD002TCD, 20HDA01FCD, and 20HDA004CD — share the same battery bay dimensions, three-cell connector pinout, and BMS handshake protocol. Any T470 chassis accepting 01AV419 through 01AV421 accepts this cell.
- Bench tested on actual hardware: We ran this cell on a T470 unit and confirmed the BMS completed full charge recognition without fault codes. The fuel gauge IC accepted the new cell and began a calibration pass on the first charge cycle.
- Post-install discharge cycle on the T470: After fitting this cell, run the laptop from 100% down to hibernate cutoff without interruption, then charge uninterrupted back to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears in Lenovo Vantage after every cell swap.
BIOS reporting poor battery health immediately after fitting the T470 replacement
The ThinkPad BIOS reads health status from EEPROM data written by the previous cell. When a new cell installs, the EEPROM values don't match the fresh chemistry, so the BIOS flags the battery as degraded before a single charge cycle completes. This is a data mismatch, not a fault with the replacement cell. Run one full discharge-to-hibernate then an uninterrupted charge to 100% — the learn cycle rewrites the EEPROM baseline against the new cell. After two cycles, Lenovo Vantage and the BIOS should report health accurately.
T470 shutting down abruptly at 20–30% shown on the fuel gauge
This happens when the fuel gauge IC is still calibrated to the old cell's discharge curve. Under combined CPU and display load, the new cell hits a voltage cliff that the gauge hasn't mapped yet — the system reads 25% remaining but actual cell voltage drops below the cutoff threshold. The fix is a full calibration cycle: charge to 100%, then run a steady workload until the machine hibernates on low battery. Do this twice and the fuel gauge re-maps the curve against the actual cell. After calibration, shutdown should not occur above 5% reported charge.