About this replacement
Lenovo ThinkPad L560 / L570 — 10.8V Li-ion Replacement Battery (SB10H45073)
This 10.8V, 4400mAh (47.52Wh) Li-ion battery replaces the original cell in the Lenovo ThinkPad L560 and L570. It fits models across both series, including the L560-7CD and ThinkPad L560(20F10022GE), and matches the OEM connector, form factor, and BMS communication protocol. Compatible OEM part numbers include SB10H45073, SB10H45074, SB10H45071, 00NY488, 00NY489, and 00NY486.
- L560 and L570 fitment: Both series run the same 10.8V battery rail, use the same physical connector, and expect the same BMS handshake from the EEPROM. A single cell covers both platforms without modification.
- Bench tested on actual hardware: We ran this cell on an L560 and monitored BMS communication through full charge and discharge cycles. The BIOS recognised the battery as a valid Lenovo cell, charge current behaved correctly, and no BMS fault codes were logged.
- First-cycle reset on ThinkPad firmware: After installing, run one full discharge to hibernate cutoff, then charge uninterrupted to 100%. This forces the ThinkPad battery learn cycle to reset against the new cell and clears the inaccurate health warning that appears after every cell swap.
BIOS reporting battery health as poor after swapping cells on the L560
The ThinkPad BIOS reads health data from the EEPROM embedded in the battery pack. When a new cell is installed, the EEPROM contains factory defaults that do not yet match the BIOS's learned charge history from the old pack. The firmware flags this mismatch as degraded health. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% allows the battery learn cycle to write new baseline data and clear the warning.
L560 shuts down at 20–30% shown on the fuel gauge
This happens when the fuel gauge IC has not yet calibrated against the new cell's actual voltage curve. The gauge still uses discharge curve data from the old, degraded cell, so its percentage readout drifts early. The cell hits a voltage floor the hardware cannot sustain under combined CPU and display load before the gauge reaches zero. Two to three full discharge-and-recharge cycles recalibrate the IC — after that, shutdown should align with a displayed charge of 5% or below, with the cell resting above 10.0V at cutoff.