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Lenovo IdeaPad S340-13IML 11.52V Compatible Battery 5B10U95573

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Fits Lenovo IdeaPad S340-13IML ultrabook; replaces OEM part numbers 5B10U95573, 5B10W67282, L18M3PFB, and SB10W67210.
11.52V and 3700mAh capacity restores full charge cycles on this 13-inch laptop after original cell degradation.
Connector seats vertically into the battery slot with a single locking tab on the left edge.
We bench-tested this cell on the S340 motherboard; the fuel gauge IC accepted the new BMS without fault codes.
After installation, run one full discharge to hibernation 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.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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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.

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🔹 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

11.52V

Amp

3700mAh

Lenovo IdeaPad S340-13IML — 11.52V Li-Polymer Replacement Battery (5B10U95573)

This 11.52V, 3700mAh (42.62Wh) lithium-polymer battery replaces the original cell in the Lenovo IdeaPad S340-13IML. It fits the 81UM001GTA, 81UM000YKR, and 81UM000PJP variants under that model line. Cross-references OEM part numbers 5B10U95573, 5B10W67282, L18M3PFB, and SB10W67210.

  • IdeaPad S340-13IML compatibility: All listed S340-13IML variants share the same 11.52V three-cell Li-Polymer configuration, identical connector pinout, and the same BMS handshake protocol — one cell fits all four model codes without modification.
  • Bench tested on actual hardware: We cycled this cell through charge, load, and hibernate-cutoff on an S340-13IML unit. The BMS accepted the cell, charge current ramped correctly through CC/CV phases, and no fault codes triggered on the SMBus line.
  • First-cycle reset after installation: After fitting this cell, run one full discharge down to hibernate cutoff — do not interrupt it — then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell chemistry and clears the inaccurate health warning that appears after every cell swap on this platform.

Laptop shutting down at 20–30% shown after battery swap

This happens because the fuel gauge IC is still reading state-of-charge against the old cell's discharge curve. Under combined CPU and display load, the new cell hits a voltage cliff earlier than the IC expects — the BMS sees the rail drop below the low-voltage threshold and cuts power instantly. The percentage shown on screen means nothing until two or three full calibration cycles complete. Run full discharges to hibernate, not manual shutdowns, so the IC can log the actual curve.

BIOS reporting battery health as poor or unknown after replacement

The BIOS reads health data from the EEPROM embedded in the battery's protection circuit. When a new cell goes in, the EEPROM starts fresh — cycle count and rated capacity data differ from what the BIOS logged for the old cell, so it flags a mismatch. This is not a fault with the cell. Run the battery learn cycle — discharge to hibernate, charge to 100% uninterrupted — and the BIOS will re-calibrate against the new EEPROM values. After one full cycle the health warning clears on most S340-13IML firmware versions.

Compatible Models

IdeaPad S340-13IML IdeaPad S340-13IML(81UM001GTA) IdeaPad S340-13IML(81UM000YKR) IdeaPad S340-13IML(81UM000PJP)

Replaces Part Numbers

5B10U95573 5B10W67282 L18M3PFB SB10W67210

Technical Specifications

Voltage11.52V
Amp Hours3700mAh
Capacity3700mAh
Rate42.62Wh
Net Weight180g /6.35 oz
Gross Weight440g /15.52 oz
Approximate Weight440g /15.52 oz
Dimension 264.65 x 78.35 x 6.30mm

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 S340-13IML shows the new battery as 0% and won't charge — is the cell dead on arrival?

It is almost always an EEPROM mismatch, not a failed cell. The BIOS compares the new cell's embedded data against what it logged for the old battery and stalls the charge controller when they differ. Plug in the adapter, leave the laptop closed for 20 minutes, then do a full shutdown and cold boot — this lets the SMBus re-poll the cell. If the reading is still stuck at 0%, hold the power button for 30 seconds with the adapter removed, then reconnect and boot.

The fuel gauge reads wildly different percentages every time I wake the S340-13IML — jumps from 60% to 90% between sessions.

The fuel gauge IC calibrates its state-of-charge model against discharge data it collects over time. After a cell swap, it has no logged curve for the new chemistry, so readings are erratic for the first two to three cycles. The fix is to run two complete discharges to hibernate cutoff followed by uninterrupted charges to 100% — do not top-up from 40% or shut down manually mid-discharge during these cycles. After the second full cycle, the IC locks onto the actual curve and percentage readings stabilise.

My replacement cell is reporting 38Wh in Lenovo Vantage but the spec says 42.62Wh — is something wrong?

Lenovo Vantage reads the rated Wh value stored in the cell's EEPROM, and that figure is set against the cell's nominal chemistry rating at the factory. The 42.62Wh figure in the product data reflects actual measured capacity at the 11.52V nominal voltage. The small gap between EEPROM-reported Wh and measured Wh is normal across Li-Polymer cells — it does not indicate a capacity shortfall. Run one full discharge-to-hibernate cycle and check Vantage again; the reported figure often updates once the BMS has a real discharge log to reference.

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