About this replacement
Lenovo Yoga V330-15 / V530-15 — 7.6V Li-Polymer Replacement Battery (L17M2PB4)
This is a 7.6V, 4000mAh (30.4Wh) lithium-polymer replacement battery for the Lenovo Yoga V330-15 and V530-15 convertible laptops. It also fits the Yoga V530-14 and V130-15IKB series using the same OEM part numbers L17M2PB4, L17M2PB3, L17L2PB3, L17L2PB4, L17C2PB3, and L17C2PB4. The connector pinout and BMS handshake match the original Lenovo cell exactly.
- V330 / V530 platform fit: All six OEM part numbers in this family share the same 7.6V cell architecture, connector housing, and BMS communication protocol across the V330-15, V530-15, V530-14, and V130-15IKB chassis — which is why one replacement cell covers the full range.
- Bench tested on actual hardware: We ran this cell on a V530-15 unit and confirmed the BMS initialised on first boot without error, accepted a full charge cycle, and passed the BIOS hardware scan without flagging a fault code.
- Post-install calibration on Lenovo Yoga: After fitting, run the laptop down to hibernate-cutoff on battery only — no AC — then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell and clears the inaccurate health warning that appears after every cell swap on this platform.
Why the Yoga V330 / V530 BIOS reports poor battery health after a cell swap
The Lenovo BIOS reads battery health from EEPROM data embedded in the original cell — not from live voltage or capacity measurements. When a new cell goes in, that EEPROM data is blank or mismatched, so the BIOS immediately flags the battery as degraded or unknown. This is a firmware calibration issue, not a fault with the replacement cell. One full discharge-to-hibernate followed by an uninterrupted charge to 100% lets the BIOS rewrite its internal battery model and clear the health warning.
Laptop shuts down at 20–30% shown after battery replacement
This happens when the fuel gauge IC still holds the old cell's discharge curve in memory. Under combined CPU and display load, the new cell's actual voltage drops faster than the stale curve predicts, causing the system to hit its cutoff threshold well before the gauge reads zero. The fix is two to three full discharge-and-charge calibration cycles, which forces the fuel gauge IC to map its readings against the new cell's actual chemistry. After calibration, the gauge and the real cutoff voltage — approximately 6.0V at the cell — should align.