About this replacement
Lenovo IdeaPad Miix 510-12ISK Series — 7.68V Li-Polymer Replacement Battery (5B10L67278)
This 7.68V, 4850mAh Li-Polymer cell replaces the original pack in the Lenovo IdeaPad Miix 510-12ISK and Miix 510-12IKB 2-in-1 hybrid tablet-laptop. It matches the OEM voltage rail, connector pinout, and physical dimensions (241.14 × 79.20 × 4.50mm) of the factory cell. Fits models including the 80U10002GE, 80XE0006GE, 80U1000JGE, and the broader MIIX 510 12ISK family.
- Miix 510 series fitment: The 12ISK and 12IKB share the same flat Li-Polymer pack, voltage rail, and BMS connector. OEM part numbers 5B10L67278, 5B10L68713, BSN04170A5-AT, and BSNO4170A5-LH are all interchangeable within this family — same cell, different label revisions from Lenovo's supply chain.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the Miix 510 platform. The BMS handshake completed on first connection, charge initiation triggered without manual reset, and the fuel gauge IC began registering state-of-charge within two cycles.
- First-cycle calibration on the Miix 510: After installation, run one full discharge to hibernate-cutoff — do not force shutdown — 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 510
When the Miix 510 BIOS shows "poor health" immediately after a new cell is installed, the cause is EEPROM data carried over from the old pack — not a fault with the new cell. The BIOS battery manager stores cycle count, charge history, and health status in firmware registers that do not reset automatically on cell swap. Run a full discharge to hibernate-cutoff followed by an uninterrupted charge to 100% to force the learn cycle to complete. After two to three full cycles, the BIOS health reading will update to reflect the actual state of the new cell.
Miix 510 shutting down at 20–30% charge shown on screen
This symptom happens when the cell voltage drops below the BMS cutoff threshold under combined CPU and display load before the fuel gauge IC expects it. The fuel gauge was calibrated against the old, degraded cell and its discharge curve no longer maps accurately to the new cell's chemistry. The fix is to complete two full discharge-to-hibernate and charge-to-100% cycles — this gives the fuel gauge IC enough data to re-map the voltage curve against the new cell. After calibration, the shutdown point should track accurately down to the real cutoff near 3.0V per cell.