About this replacement
Lenovo IdeaPad Slim 3 14ABR8 — 11.31V Li-Polymer Replacement Battery (5B11K09313)
This is an 11.31V, 4100mAh (46.37Wh) Li-Polymer battery for the Lenovo IdeaPad Slim 3 14ABR8 series. It fits models including the 82XL000JHH, 82XL0018MJ, 82XL001QPH, 82XL0020SB, and over 126 additional 14ABR8 variants. OEM cross-references include 5B11K09313, 5B11K09314, L22B3PF2, L22C3PF2, L22M3PF2, and related L22-series part numbers.
- 14ABR8 series compatibility: All covered models run the same 11.31V three-cell architecture with a shared connector pinout and BMS handshake protocol. Lenovo used multiple OEM part numbers across production batches — 5B11K09313, 5B11K09314, 5B11K09317, and the L22 series — but the electrical spec and physical form factor are identical across all of them.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the IdeaPad Slim 3 14ABR8 platform. The BMS handshook correctly, charge current ramped normally from CC to CV phase, and the protection circuit tripped at expected cutoff thresholds without false positives.
- Post-install recalibration on the IdeaPad Slim 3: After fitting this battery, run a full discharge until the laptop hibernates, then charge uninterrupted to 100% without interruption. This resets the BIOS battery learn cycle on the Slim 3 and clears the inaccurate health or capacity warning that appears after every cell swap on this platform.
BIOS reporting poor battery health immediately after replacement
The IdeaPad Slim 3 BIOS reads health data cached from the previous cell's EEPROM. When a new cell goes in, the BIOS has no learn data for it and flags the battery as degraded or unknown. This is not a fault with the replacement cell. Run one full discharge-to-hibernate cycle followed by a complete uninterrupted charge to 100% — this forces the BIOS learn cycle to write fresh calibration data against the new cell chemistry.
Laptop shuts down at 20–30% charge shown on screen
This happens when the fuel gauge IC still holds calibration data from the old, degraded cell. It estimates remaining capacity based on that old profile, so the percentage shown on screen no longer maps accurately to actual cell voltage. Under full CPU plus display load, the new cell hits voltage thresholds the BIOS expects to see at near-zero, and the system cuts power to protect itself. Two to three full discharge and recharge cycles recalibrate the fuel gauge IC against the new cell and stop the premature shutdowns.