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Toshiba Satellite Click Mini L9W-B 3.75V Replacement Battery

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From $43.99 USD $54.99
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Fits Toshiba Satellite Click Mini L9W-B 8.9 and L9W-B-103 models, replaces OEM part A000381560.
3.75V 5100mAh Li-Polymer cell delivers 19.13Wh to the 8.9-inch display unit during portable use.
Connector slides straight into the battery slot on the display module with a positive terminal contact lock.
Bench testing showed clean BMS handshake on first insertion and stable voltage curve under sustained tablet-mode draw.
After installation, discharge fully to hibernation cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears false health warnings that appear after every cell swap.
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.

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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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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

3.75V

Amp

5100mAh

Toshiba Satellite Click Mini L9W-B Series — 3.75V Li-Polymer Replacement Battery (A000381560)

This 3.75V 5100mAh (19.13Wh) Li-Polymer cell replaces the original battery in the Toshiba Satellite Click Mini L9W-B 8.9 and its variants, including the L9W-B-100, L9W-B-103, and L9W-B-107. The battery sits inside the detachable display unit — not the keyboard dock. It uses OEM part numbers A000381560, T10TC, and T8T-2.

  • L9W-B display unit compatibility: All L9W-B variants share the same 3.75V single-cell architecture, connector pinout, and BMS handshake protocol in the display unit. The keyboard dock carries its own separate power rail and does not interact with this cell.
  • Bench tested on actual hardware: We ran this cell through charge, discharge, and BMS communication checks on the L9W-B platform. The BMS handshake completed correctly, charge acceptance reached full capacity, and no fault codes were triggered during the test cycle.
  • Post-install learn cycle on the L9W-B: After fitting this cell, run one full discharge until the device hibernates on its own, then charge uninterrupted to 100% without interruption. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.

Why the L9W-B BIOS flags a new battery as poor health immediately after swap

The Toshiba BIOS stores battery health data in an EEPROM register tied to the original cell's charge cycle count. When a new cell is fitted, that register still holds the old cell's degraded data. The BIOS reads it and reports poor health even though the new cell is at full capacity. Running one full discharge-to-hibernate then a complete uninterrupted charge resets the learn cycle and allows the BIOS to write fresh calibration data to the register.

Fuel gauge jumping erratically for the first few charge cycles after replacement

The fuel gauge IC on the L9W-B uses coulomb counting calibrated against the original cell's internal resistance profile. A new cell has a different impedance signature, so the IC's charge estimates are inaccurate until it recalibrates. This shows up as the percentage jumping — often skipping from 60% to 15% with no warning. Run two to three full discharge and charge cycles from 100% down to hibernate cutoff, then back to 100%, and the IC will recalibrate against the new cell's actual curve.

Compatible Models

Satellite Click Mini L9W-B 8.9 Satellite Click Mini L9W-B-103 Satellite Click Mini L9W-B-100 Satellite Click Mini L9W-B-107 Satellite Click Mini L9W-B-102 Satellite Click Mini L9W-B

Replaces Part Numbers

A000381560 T10TC T8T-2

Technical Specifications

Voltage3.75V
Amp Hours5100mAh
Capacity5100mAh
Rate19.13Wh
Net Weight102g /3.60 oz
Gross Weight242g /8.54 oz
Approximate Weight242g /8.54 oz
Dimension 122.10 x 125.30 x 4.20mm

Product Highlights

  • Brand: Toshiba
  • 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 L9W-B shows 0% or "unknown battery" in Windows right after I installed the new cell — is the battery dead?

The EEPROM on the old cell stored charge history that Windows and the BIOS used for identification. With a new cell fitted, that data is gone and the fuel gauge IC has nothing to read until it runs a calibration pass. Plug in the charger, let it charge to 100% uninterrupted, then discharge fully to hibernate cutoff. After one complete cycle the OS will recognise the cell and report a real percentage.

The L9W-B shuts off hard at around 25% with the new battery — no warning, just cuts out.

This is a voltage cliff issue. Under the combined load of the display, CPU, and wireless radio, the cell voltage drops sharply below the BMS cutoff threshold before the fuel gauge reaches 0%. The fuel gauge IC is reading state-of-charge from a curve still calibrated to the old cell. Run two full discharge cycles to hibernate cutoff — on the second cycle the BMS and fuel gauge will align their cutoff points and the early shutdown will stop.

Windows Device Manager shows the wrong Wh rating for this battery — it says 17Wh but the spec is 19.13Wh.

The Wh value displayed in Windows is pulled from the EEPROM on the original cell, which stays cached in the system even after a swap. The new cell's actual rated capacity is 19.13Wh. After completing one full discharge-to-hibernate and a complete uninterrupted charge to 100%, the BIOS overwrites the cached EEPROM figure with data from the new cell and the correct Wh value appears in Device Manager.

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Toshiba Satellite Click Mini L9W-B 8.9 Replacement Battery, 3.75V, 5100mAh, Li-Polymer 1

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