Lenovo Yoga Duet 7 13ITL6 L20M4PE0 Replacement Battery 7.72V 5150mAh
Available by SPECIAL ORDER. Delivery for this product typically takes 2 weeks.
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Lenovo Yoga Duet 7 13ITL6 L20M4PE0 Replacement Battery 7.72V 5150mAh - 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 Yoga Duet 7 13ITL6 L20M4PE0 Replacement Battery 7.72V 5150mAh - is backordered and will ship as soon as it is back in stock.
Voltage
7.72V
Amp
5150mAh
Lenovo Yoga Duet 7 13ITL6 — 7.72V Li-Polymer Replacement Battery (L20M4PE0)
This 7.72V, 5150mAh (39.76Wh) lithium-polymer cell replaces the original L20M4PE0 battery in the Lenovo Yoga Duet 7 13ITL6 convertible. It fits the full 13ITL6 lineup, including variants 82MA0025AX, 82MA0074HH, 82MA001NCK, 82MA006MGE, and 139 additional regional SKUs. The cell matches OEM part numbers L20M4PE0, 5B11B44627, 5B11B44628, and SB11B44629.
- 13ITL6 variant compatibility: All 82MA-series Yoga Duet 7 13ITL6 units share the same 7.72V two-cell Li-Polymer architecture, connector pinout, and BMS handshake protocol — regional SKU differences are in the wireless card and keyboard layout, not the battery bay or charge circuit.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on the 13ITL6 platform. The BMS completed handshake without error, charge current stepped down correctly at 4.35V per cell, and the protection circuit responded to over-current as expected.
- Post-install calibration on the Yoga Duet 7: After fitting, run one full discharge to the hibernate cutoff, then charge uninterrupted to 100% without interruption. This forces the BIOS to run its battery learn cycle against the new cell and clears the inaccurate "poor health" flag that nearly always appears on first boot after a cell swap.
Laptop shutting down at 20–30% remaining after battery swap
This happens because the fuel gauge IC still holds calibration data from the old, degraded cell. The new cell has a different discharge curve, so the gauge calls "empty" well before actual depletion. Under full CPU plus display load, the Yoga Duet 7 hits a voltage cliff where the pack voltage drops faster than the gauge expects, triggering an emergency shutdown. Running two or three full discharge-to-hibernate and charge-to-100% cycles resets the IC's internal model. After calibration, the gauge tracks the new cell accurately and the premature shutdowns stop.
BIOS reporting battery health as poor or unknown after replacement
The Lenovo BIOS reads health status from EEPROM data written by the original cell's embedded controller. A new cell ships with factory EEPROM values that don't match the wear history the BIOS expects, so it flags the battery as degraded or unrecognised. This is a data mismatch, not a fault with the replacement cell. Run the battery learn cycle — one full discharge to hibernate followed by an uninterrupted charge to 100% — and the BIOS will rewrite its health baseline against the new cell's actual readings.
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
My Yoga Duet 7 now shows the wrong Wh rating in system info after fitting the new battery — is the cell faulty?
The Wh figure shown in Windows or Lenovo Vantage is read from the cell's EEPROM, not measured in real time. A replacement cell's EEPROM may report a slightly different rated value than the original, even when the actual chemistry and capacity match the spec. This is a data field difference, not a capacity shortfall. Run a full discharge-to-hibernate cycle and check the "Last Full Charge Capacity" figure — it should read at or above 39.76Wh after one calibration cycle.
The fuel gauge is jumping around wildly — showing 60%, then 80%, then 45% within minutes of unplugging. What's happening?
The fuel gauge IC on the Yoga Duet 7 builds its discharge model from charge and discharge history. After a cell swap, it has no valid history for the new cell, so it estimates erratically until it accumulates enough data. This is not a wiring or BMS fault. Complete three full discharge-to-hibernate and charge-to-100% cycles without interruption, and the gauge will stabilise as the IC maps the new cell's actual voltage-to-capacity curve.
The new battery stops charging at 80% and won't go higher — is the replacement cell defective?
This is almost always the BIOS charge-limit feature, not a fault with the cell. Lenovo's firmware includes a "Conservation Mode" that caps charging at 80% to reduce cycle wear — it ships enabled on some units and can switch on after a BIOS update. Open Lenovo Vantage, go to Power, and check the Battery Charge Threshold setting. Set the upper threshold to 100% and the charge will resume past 80%.
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