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Lenovo Xiaoxin Air 13IWL L17C4PF0 Replacement Battery 15.36V

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From $65.99 USD $81.99
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Fits Lenovo Ideapad Xiaoxin Air 13IWL laptops replacing OEM part L17C4PF0, L17M4PF0, SB10W67316, SB10W67414, 5B10R38650, or 5B10W67405.
15.36V at 2800mAh capacity restores full charge cycles to aging ultrabooks that cut runtime short mid-session.
Connector type is proprietary Lenovo keyed slot; orientation locks one way into the battery cavity beneath keyboard.
We bench-tested this cell against the original pack — BMS accepted handshake on first insertion, voltage held steady under sustained CPU load.
After install, run one full discharge to hibernation then charge uninterrupted to 100% to reset the BIOS battery learn cycle and clear false health warnings.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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

🔹 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.

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⚠️ 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.

Voltage

15.36V

Amp

2800mAh

Lenovo Xiaoxin Air 13IWL — 15.36V Li-Polymer Replacement Battery (L17C4PF0)

This is a 15.36V, 2800mAh (43.01Wh) Li-Polymer replacement battery for the Lenovo Xiaoxin Air 13IWL and Xiaoxin Air 13 ultrabook. It slots directly into the same bay as OEM part L17C4PF0 and related numbers including L17M4PF0, SB10W67316, and 5B10R38650. If your original cell has swollen, lost charge capacity, or stopped registering in the BIOS, this is the replacement.

  • Xiaoxin Air 13 series compatibility: The 13IWL and standard Xiaoxin Air 13 share the same 15.36V four-cell architecture, connector pinout, and BMS handshake protocol — which is why multiple OEM part numbers (L17C4PF0, L17M4PF0, SB10W67414, 5B10W67405) cross-reference to this single cell pack.
  • Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the Xiaoxin Air 13 platform. The BMS communicated correctly with the Lenovo EC, charge current tapered normally at top-of-charge, and no false low-voltage cutoffs appeared under sustained CPU and display load.
  • BIOS learn cycle after installation: After fitting this battery, run one full discharge to the 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.

Why the Xiaoxin Air 13 shuts down at 20–30% after a battery swap

The Xiaoxin Air 13 uses a fuel gauge IC that maps voltage curves from the original cell's EEPROM data. A new cell has a different internal resistance profile, so the IC misreads remaining capacity until it recalibrates. Under full CPU and display load, the cell voltage drops faster than the IC expects, triggering an emergency shutdown well above the true empty point. Running two to three full discharge-to-hibernate and full-charge cycles retrains the fuel gauge against the new cell's actual voltage curve. After calibration, the shutdown-at-30% behaviour stops.

BIOS reporting wrong Wh rating after fitting this cell

The Lenovo EC reads Wh rating from EEPROM data embedded in the battery pack, not from live cell measurements. If the value shown in BIOS or Lenovo Vantage differs from 43.01Wh, the EC is still reading cached data from the previous battery or the new pack's EEPROM reflects a slightly different rated figure from the OEM cross-reference. This does not affect actual charge or discharge behaviour. To force a fresh read, fully power down, disconnect AC, reseat the battery connector, then boot and check BIOS under Power — the correct value should populate within one charge cycle.

Compatible Models

xiaoxin Air 13IWL xiaoxin Air 13

Replaces Part Numbers

L17C4PF0 L17M4PF0 SB10W67316 SB10W67414 5B10R38650 5B10W67405

Technical Specifications

Voltage15.36V
Amp Hours2800mAh
Capacity2800mAh
Rate43.01Wh
Net Weight205.2g /7.24 oz
Gross Weight345.2g /12.18 oz
Approximate Weight345.2g /12.18 oz
Dimension 243.00 x 97.80 x 5.50mm

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 Xiaoxin Air 13IWL shows the new battery as "unknown" or 0% in Windows right after installation — what's happening?

The fuel gauge IC in the Xiaoxin Air 13 initialises against EEPROM data from the old cell. When a new pack is fitted, the IC has no calibration baseline and reports an unknown or zero state until it runs at least one full cycle. Plug in AC, let it charge uninterrupted to 100%, then discharge to hibernate cutoff. After that first complete cycle the Windows gauge will read correctly.

The laptop keeps shutting down when the battery indicator shows around 25% — is the replacement cell faulty?

This is a fuel gauge calibration problem, not a cell fault. The Lenovo EC maps voltage drop against an internal curve built from the previous battery's data, and under high CPU or display load the new cell's voltage sags faster than that stale curve predicts — triggering a shutdown before true empty. Run two full discharge-to-hibernate and uninterrupted full-charge cycles to recalibrate. After the second cycle, shutdowns at 20–30% shown stop on this platform.

Lenovo Vantage is showing the wrong Wh rating for this battery — should I be concerned?

No. Lenovo Vantage reads the Wh figure from EEPROM data stored in the battery pack, and cross-referenced OEM part numbers like L17M4PF0 and L17C4PF0 can carry slightly different rated values in firmware even though the physical cell is identical. The displayed figure does not affect charge acceptance or discharge behaviour. To force a fresh EC read, fully shut down, disconnect AC, reseat the battery connector firmly, then boot into BIOS under the Power menu — the value should update within one full charge cycle to reflect 43.01Wh.

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