About this replacement
Acer Aspire 2000 Series — 14.8V Li-ion Replacement Battery (BATCL32)
This is a 14.8V 4400mAh (65.12Wh) Li-ion battery for Acer Aspire 2000-series notebooks, including the 2002WLCi, 2026LMi, 2001LMi, and 2025LMi among others. It replaces OEM part numbers BATCL32, BATCL32L, BT.A1401.001, BT.A2401.001, BTP-AS2000, and LC.BTP05.001. Dimensions are 128.20 × 100.60 × 19.80mm — check yours before ordering if the bay has been modified.
- Aspire 2000-series compatibility: These models share a common 14.8V four-cell architecture and the same battery bay connector pinout. The BMS handshake uses the same SMBus protocol across the range, so one cell fits the full group without firmware differences between SKUs.
- Bench tested on actual hardware: We ran this cell on an Aspire 2002WLCi and cycled it through charge and full-load discharge. The BMS held cutoff voltage correctly at the low end, and charge termination triggered cleanly at 16.8V with no overcharge events recorded.
- First-cycle calibration on the Aspire 2000: After installation, run one full discharge until the laptop hibernates on low battery, then charge uninterrupted to 100% without interruption. This resets the BIOS battery learn cycle and clears the inaccurate health warning that almost always appears after a cell swap on this platform.
Why the Aspire 2002WLCi shuts down at 20–30% after a battery swap
The Aspire 2000's fuel gauge IC builds a discharge model from the original cell's EEPROM data. When a new cell goes in, that model is wrong — the IC thinks the voltage floor is higher than it actually is. At around 20–30% shown on the gauge, the real cell voltage drops below the IC's learned threshold under CPU and display load, and the system cuts power instantly. Running two full calibration cycles — full discharge to hibernate cutoff, then full uninterrupted charge — rewrites the model against the new cell's actual curve and eliminates the premature shutdown.
BIOS reports battery health as "poor" or "replace" immediately after install
This happens because the BIOS reads health data stored in the old cell's EEPROM, not from live measurements of the new cell. The new cell arrives with a neutral EEPROM state that the BIOS interprets as degraded. It is not a fault with the replacement. Complete one full discharge-to-hibernate followed by a full charge to 100% — after that cycle the BIOS recalculates health from actual charge data and the warning clears.