About this replacement
Lenovo Miix 310-10ICR — 3.7V Li-Polymer Replacement Battery (LENM1029CWP)
This is a 3.7V, 6900mAh (25.53Wh) lithium-polymer replacement battery for the Lenovo Miix 310 and Miix 310-10ICR 2-in-1 tablet. It fits the detachable hybrid chassis that runs both as a standalone tablet and as a notebook when docked to the keyboard base. OEM part numbers LENM1029CWP, 5B10L60476, and 5B10L13923 all cross-reference to this cell.
- Miix 310 series compatibility: All Miix 310-10ICR variants share the same battery bay dimensions, connector pinout, and BMS handshake protocol — the flat 140.50 × 142.80 × 3.00mm Li-Polymer pouch format is consistent across the full 310 lineup regardless of regional SKU suffix.
- Bench tested on actual hardware: We ran this cell on a Miix 310-10ICR unit and confirmed the BMS accepted charge initiation without fault codes, balanced cell voltage correctly through full charge, and tripped the low-voltage cutoff at the expected threshold without hard shutoff errors.
- Post-install recalibration on the Miix 310: After fitting this cell, run one full discharge down to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on this platform.
BIOS reporting battery health as poor after replacement on the Miix 310
The Miix 310 stores battery health metrics in EEPROM on the original cell. When a new cell is installed, the BIOS reads stale data that doesn't match the new chemistry profile and flags the battery as degraded or unknown. This is a calibration state, not a fault. Run one full discharge-to-hibernate cycle followed by an uninterrupted full charge. After two to three complete cycles, the BIOS fuel gauge IC recalibrates against the new cell and the health warning clears.
Miix 310 shutting down at 20–30% charge shown on screen
This symptom means the fuel gauge IC has not yet mapped the new cell's voltage curve. The displayed percentage is based on EEPROM data from the old, degraded cell — so 25% shown may actually be near the real cutoff voltage of the new cell. The Miix 310 cuts power when the cell drops below approximately 3.0V per cell under load from the display and SoC combined. Completing two full discharge-to-100% cycles forces the gauge IC to relearn the voltage-to-capacity curve and eliminates the premature shutoff.