About this replacement
Lenovo ThinkPad T470s / T460s — 11.4V Li-Polymer Replacement Battery (00HW025)
This 11.4V, 2000mAh Li-Polymer battery replaces the internal cell in the Lenovo ThinkPad T470s and T460s ultrabooks. It covers a wide OEM part number range including 00HW025, 01AV405, 01AV406, SB10J79004, and related variants. Install it when the original cell no longer holds adequate charge between outlets.
- T470s and T460s compatibility: Both the T470s and T460s share the same 11.4V battery rail, connector pinout, and BMS handshake protocol, which is why a single cell covers both platforms. The replacement communicates over the SMBus line so the BIOS can read state-of-charge and health data normally.
- Bench tested on actual hardware: We ran this cell on a ThinkPad T460s and confirmed the BMS completed charge termination correctly, the BIOS recognised the battery without error codes, and the fuel gauge IC responded to the SMBus polling as expected throughout the test cycle.
- Post-install learn cycle for T-series BIOS: After fitting this cell, discharge the laptop fully until it hibernates, then charge uninterrupted to 100% without using the machine. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on T-series hardware.
BIOS reporting battery health as poor immediately after replacement
The T470s and T460s BIOS stores cycle count and health metrics in EEPROM on the original battery's controller board. When a new cell goes in, the BIOS compares its stored data against what the fresh battery reports and flags a mismatch as degraded health. This is not a fault with the new cell — it is a calibration gap. Run one complete discharge-to-hibernate followed by a full uninterrupted charge to 100%. After two to three of these cycles, the fuel gauge IC recalibrates and the BIOS health indicator normalises.
Laptop shuts down at 20–30% charge shown on the gauge
This symptom appears when the fuel gauge IC has not yet mapped the new cell's actual voltage curve. Under simultaneous CPU and display load, the cell voltage drops faster than the uncalibrated gauge predicts, and the system hits its low-voltage cutoff while the percentage still reads high. The fix is calibration, not a faulty battery. Discharge the laptop completely to hibernate cutoff at least twice under normal workload, charging fully between each cycle. After calibration, the gauge cutoff and actual cell voltage align — shutdown should not occur above 5% charge remaining.