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Lenovo IdeaPad S10-3 l09S6Y14 Replacement Battery 11.1V 4400mAh

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From $70.99 USD $87.99
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Fits Lenovo IdeaPad S10-3 netbooks; replaces OEM part l09S6Y14, l09S3Z14, l09M6Y14, and 20+ Lenovo stock numbers listed on your device label.
11.1V, 4400mAh delivers 48.84Wh — matches the S10-3 power envelope for full CPU and display load without voltage sag.
Connector is a 3-pin JST plug; slides into the battery bay with the locking tab facing the hinge side and locks flush with a single click.
We bench-tested this cell in an S10-3 motherboard; the BMS negotiated handshake on first insertion and charged to 100% with no cutoff errors or fault codes.
After installation, run one full discharge to sleep mode then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears the inaccurate health warnings that appear after every cell swap on Lenovo platforms.
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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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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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

11.1V

Amp

4400mAh

Lenovo IdeaPad S10-3 — 11.1V Li-ion Replacement Battery (L09S6Y14)

This is an 11.1V, 4400mAh (48.84Wh) Li-ion battery for the Lenovo IdeaPad S10-3 netbook. It replaces OEM part numbers L09S6Y14, L09M6Y14, L09C6Y14, and the full 57Y6xxx and 121000xxx series. Fits S10-3 variants including the 06474CU and 064735U builds.

  • S10-3 variant coverage: The S10-3 line spans multiple sub-models — 0647, 06474CU, 064735U among them — but all share the same 11.1V three-cell rail and the same connector footprint. The BMS handshake protocol is consistent across this platform, so one cell spec covers the full range.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on an S10-3 unit. The BMS communicated correctly with the EC firmware, charge current ramped normally through CC/CV stages, and no protection tripping occurred at idle or moderate CPU load.
  • Post-install calibration on the S10-3: After fitting this cell, run the netbook 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 false "poor health" warning that appears immediately after any cell swap on this platform.

BIOS reporting battery health as poor after replacement on the S10-3

The S10-3 EC reads health data from the battery's EEPROM on first contact. When a new cell arrives, that EEPROM data doesn't match the discharge history the BIOS expects, so it flags the battery as degraded — even when the cell is brand new. This is not a fault with the replacement cell. One full discharge-to-hibernate followed by an uninterrupted charge to 100% resets the learn cycle. After two to three cycles, the BIOS health readout normalises.

IdeaPad S10-3 shutting down at 20–30% charge shown

The fuel gauge IC on the S10-3 calibrates against the original cell's discharge curve. Fit a new cell and the IC's stored curve no longer matches actual cell chemistry, so the percentage readout drifts — the system hits a voltage floor the IC doesn't recognise and shuts down before the displayed figure reaches zero. The fix is calibration: discharge fully to hibernate, charge to 100% without interruption, repeat twice. By the third cycle the fuel gauge IC has mapped the new cell's voltage curve and the shutdown-at-30% behaviour stops. Check that battery voltage under light load reads above 10.8V at the point the shutdown previously triggered — anything below that confirms the old cell data was the cause.

Compatible Models

IdIdeaPad S10-3 IdeaPad S10-3 - 06474CU IdeaPad S10-3 0647 IdeaPad S10-3 064735U IdeaPad S10-3 064737U IdeaPad S10-3 064738U IdeaPad S10-3 064746U IdeaPad S10-3 064752M IdeaPad S10-3 064757M IdeaPad S10-3 064759M IdeaPad S10-3 0647EBV IdeaPad S10-3 0647EFV IdeaPad S10-3 20039 IdeaPad S10-3 59-045096 IdeaPad S10-3 M33D3UK IdeaPad U165 IdeaPad U165-AON IdeaPad U165-ATH Ideapad U160 IdeaPad S100 IdeaPad S205 IdeaPad S10-3 0647-29U IdeaPad S10-3 0647-2AU IdeaPad S10-3 0647-2BU IdeaPad S10-3 IdeaPad S10-3-06474CU IdeaPad U160-08945KU IdeaPad U160-08945LU IdeaPad U160-08945MU

Replaces Part Numbers

l09S6Y14 l09S3Z14 l09M6Y14 l09M3Z14 l09C6Y14 l09C3Z14 l09C3B14 57Y6448 57Y6446 57Y6444 57Y6442 121000932 121000931 121000930 121000929 121000927 121000926 121000925 121000922 121000921 121000920 121000919 121000928 121001117 121001118 121001119 121001138 121001139 121001141 3ICR19/66 57Y6517 57Y6519 57Y6522 57Y6524 57Y6631 57Y6632 57Y6633 57Y6634 L09M6Z14

Technical Specifications

Voltage11.1V
Amp Hours4400mAh
Capacity4400mAh
Rate48.84Wh
Net Weight284.2g /10.02 oz
Gross Weight434.2g /15.32 oz
Approximate Weight434.2g /15.32 oz
Dimension 203.90 x 52.90 x 26.60mm

Product Highlights

  • Brand: Lenovo
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My IdeaPad S10-3 shows 0% or "plugged in, not charging" immediately after fitting the new battery — what's wrong?

The EC on the S10-3 sometimes fails to initialise a new cell if the old battery was deeply discharged before removal. Remove the new cell, hold the power button for 15 seconds with no battery and no AC connected, then refit the battery and connect AC before pressing power. This drains residual charge from the EC and forces a fresh handshake. If the system still shows 0%, check that AC adapter output is stable at 20V before assuming a cell fault.

Windows shows this battery as 35Wh but the spec says 48.84Wh — is the cell wrong?

The Wh figure Windows reports is pulled from the EEPROM on the cell, which stores the rated capacity of the original OEM cell it was paired with — not the actual chemistry of the replacement. The cell itself is 48.84Wh as specced. After two full calibration cycles the reported design capacity in Windows battery report will update to reflect the actual cell. Run `powercfg /batteryreport` after those cycles and the full Wh figure should appear under Design Capacity.

The S10-3 battery percentage jumps erratically — reads 60%, drops to 40% in minutes, then climbs again — is this a faulty cell?

This is fuel gauge IC drift, not a defective cell. The IC is still reading against the discharge curve of the old cell stored in firmware. Erratic jumps — especially in the 40–70% range — are the gauge misreading voltage steps it hasn't mapped yet. Run two full discharge-to-hibernate and charge-to-100% cycles without interruption. The IC recalibrates its curve against the new cell on each cycle, and the jumping stabilises. If it persists after three cycles, verify the cell resting voltage sits at or above 11.1V when the gauge reads 50%.

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