Lenovo IdeaPad 1-11IGL05 Compatible Battery L19C2PF1 7.5V
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Lenovo IdeaPad 1-11IGL05 Compatible Battery L19C2PF1 7.5V - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
Disclaimer
Disclaimer
⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.
🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Lenovo IdeaPad 1-11IGL05 Compatible Battery L19C2PF1 7.5V - is backordered and will ship as soon as it is back in stock.
Voltage
7.5V
Amp
4100mAh
Lenovo IdeaPad 1-11IGL05 / 1-14IGL05 — 7.5V Li-Polymer Replacement Battery (L19C2PF1)
This is a 7.5V, 4100mAh (30.75Wh) Li-Polymer battery for the Lenovo IdeaPad 1-11IGL05, IdeaPad 1-14IGL05, and the broader IdeaPad 1 series. It replaces OEM part numbers L19C2PF1, L19M2PF1, L19L2PF1, SB10W42962, and several related 5B10W codes. If your original cell has degraded, swollen, or stopped holding charge, this swap restores full unplugged use.
- IdeaPad 1 series compatibility: The 11-inch and 14-inch IdeaPad 1 variants share the same 7.5V two-cell Li-Polymer architecture, connector pinout, and BMS handshake protocol — which is why one part number family covers both chassis sizes. The physical footprint at 210.00 × 161.30 × 3.90mm fits the internal tray on both.
- Bench tested on actual hardware: We ran this cell through charge-discharge cycles under simulated CPU and display load. The BMS held voltage within spec across the full state-of-charge range, and the protection circuit tripped correctly at both over-voltage and under-voltage thresholds.
- Post-install calibration on IdeaPad 1: After fitting, discharge the laptop fully until it hibernates, then charge uninterrupted to 100% without interruption. This single learn cycle resets the BIOS fuel gauge against the new cell and clears the inaccurate battery health warning that almost always appears after a cell swap on this platform.
BIOS reporting poor battery health immediately after replacement
The IdeaPad 1 BIOS stores battery health data from the old cell's EEPROM and doesn't automatically wipe it when a new cell is fitted. On first boot, it reads stale cycle-count and capacity data from the previous battery's history and flags the new cell as degraded. This is a firmware read issue, not a fault with the replacement cell. Run one full discharge-to-hibernate followed by an uninterrupted charge to 100% — after that cycle, the BIOS recalibrates and the health warning clears.
Laptop shutting down at 20–30% remaining shown on screen
This happens when the fuel gauge IC hasn't yet mapped its charge curve to the new cell's actual voltage profile. Under combined CPU and display load, the cell hits a voltage cliff that the uncalibrated gauge doesn't predict — the system reads 25% but the cell voltage has already dropped below the safe cutoff. The OS shuts down to protect the cell before the displayed percentage reaches zero. Complete two full discharge-to-hibernate and full-recharge cycles; the gauge IC recalibrates its discharge curve against the new cell and the premature shutdowns stop. Target cell voltage at full charge: 8.4V.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Lenovo
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-Polymer
- Battery Type: Li-Polymer
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
Why does Windows show the battery Wh rating as different from what I ordered?
The Wh figure Windows displays is pulled from the cell's EEPROM, which stores the rated capacity the manufacturer programmed at the factory — not a live measurement of actual delivered energy. Replacement cells sometimes carry a slightly different EEPROM value than the OEM cell did, even when the chemistry and physical specs match. This is a data field difference, not a capacity shortfall. Run two full discharge-and-recharge cycles and check whether the reported figure stabilises closer to 30.75Wh.
The fuel gauge is jumping all over the place — showing 60%, then 80%, then 45% within minutes. What's wrong?
The fuel gauge IC on the IdeaPad 1 uses a learned discharge curve from the old cell to estimate remaining charge. After a swap, that curve no longer matches the new cell's voltage-to-capacity profile, so the gauge interpolates wildly between data points it doesn't have yet. Nothing is faulty. Discharge the laptop fully until it hibernates, then charge uninterrupted to 100% — repeat this twice. After two complete cycles the gauge IC builds a new curve against the replacement cell and the readout stabilises.
New battery installed but charge stops at 80% and won't go higher — is the cell defective?
On most IdeaPad 1 units, Lenovo Vantage or a BIOS setting called "Conservation Mode" caps charging at 60% or 80% to reduce long-term cell stress. This is firmware-controlled behaviour, not a fault in the replacement cell. Open Lenovo Vantage, go to Power, and check the Battery Charge Threshold or Conservation Mode toggle — disable it or set the upper limit to 100%. The battery will then charge to a full 8.4V on the next cycle.
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