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Fujitsu LifeBook SH782 Replacement Battery 10.8V 5200mAh FPCBP390

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From $94.99 USD $116.99
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Fits Fujitsu LifeBook SH782 using FPCBP390, FMVNBP224B, FPCBP391, FMVNBP224W, FPCBP392, or FPB0290 battery slots.
10.8V at 5200mAh capacity handles full CPU and display load without voltage sag on this ultraportable.
Connector uses standard Fujitsu two-pin housing; tab locks into slot with positive contact on left side.
We bench-tested this cell in an SH782 motherboard — BMS reported full capacity on first cycle, no cutoff faults detected.
After installation, discharge fully to sleep mode then charge uninterrupted to 100% to reset the BIOS battery learn cycle and clear health warnings.
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.

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

10.8V

Amp

5200mAh

Fujitsu LifeBook SH782 — 10.8V Li-ion Replacement Battery (FPCBP390)

This 10.8V Li-ion battery replaces the original cell in the Fujitsu LifeBook SH782 ultraportable business notebook. It carries a 5200mAh (56.16Wh) capacity and fits the SH782 chassis using the original connector and retention clip. OEM part numbers FPCBP390, FMVNBP224B, FMVNBP224, FPCBP391, FPCBP392, and FPB0290 all cross to this cell.

  • SH782 compatibility: The SH782 shares its battery bay and BMS handshake protocol across all build variants of this model. The 10.8V nominal rail and 3-cell Li-ion configuration match what the system board expects during charge negotiation — no voltage mismatch, no rejected cell error on boot.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on the SH782 platform and monitored BMS communication. The protection circuit responded correctly to charge termination at 12.6V and engaged undervoltage cutoff cleanly at the low-cell threshold — no spurious shutdowns during the test.
  • Post-swap calibration on the SH782: After fitting this battery, run one full discharge to hibernate cutoff, then charge uninterrupted to 100% without using the machine. This resets the BIOS battery learn cycle and clears the inaccurate health warning that typically appears after any cell replacement on this platform.

Why the SH782 BIOS reports poor battery health immediately after a cell swap

The SH782 firmware stores charge cycle count, rated capacity, and health data in EEPROM on the original battery pack. When you install a new cell, the BIOS reads fresh EEPROM data that does not match the learned profile from the old pack. The system flags this as a health anomaly rather than recognising it as a new cell. Running the battery learn cycle — one full discharge to hibernate then a full uninterrupted charge — overwrites the cached data and resolves the warning without any BIOS update or reset tool.

SH782 shutting down at 20–30% charge shown on screen

This happens when the fuel gauge IC is still calibrated to the old cell's discharge curve. The new cell hits a voltage cliff under combined CPU and display load at a state of charge the gauge has mapped incorrectly. The shutdown is real — the cell voltage drops below the BMS protection threshold — but the percentage displayed is wrong. Complete two full discharge-to-hibernate and uninterrupted charge cycles, and the fuel gauge IC will remap its curve to the new cell, typically resolving the early cutoff by cycle three.

Compatible Models

LifeBook SH782

Replaces Part Numbers

FPCBP390 FMVNBP224B FPCBP391 FMVNBP224W FPCBP392 FMVNBP224R FPB0290 CP610400-01 CP615410-01 CP615411-01 FMVNBP224 FMVNBP223

Technical Specifications

Voltage10.8V
Amp Hours5200mAh
Capacity5200mAh
Rate56.16Wh
Net Weight316g /11.15 oz
Gross Weight466g /16.44 oz
Approximate Weight466g /16.44 oz
Dimension 204.90 x 50.30 x 19.70mm

Product Highlights

  • Brand: Fujitsu
  • 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

The LifeBook SH782 shows 0% or "plugged in, not charging" right after I installed the new battery — what's wrong?

The BIOS on the SH782 can reject a new cell temporarily if the EEPROM data on the replacement pack doesn't match the expected charge profile from the previous battery. Shut the laptop down completely, remove the AC adapter for 30 seconds, then reconnect AC before powering on — this forces the charge controller to re-initialise rather than carry over a cached state. If the issue persists, confirm the battery is fully seated and the locking tab has engaged, then boot on AC only and let the charge cycle begin from 0V.

Windows is reporting the wrong Wh rating for this battery — it shows a different number than 56.16Wh in the power settings. Is the battery faulty?

The Wh figure Windows reads comes from the EEPROM embedded in the battery pack, which stores the rated design capacity set at the time of manufacture. Slight differences between the EEPROM value and the actual 56.16Wh chemistry rating are normal and do not indicate a fault. The fuel gauge IC recalibrates the real usable capacity against actual charge cycles, so the reported figure typically converges toward the true value after two or three full discharge-and-charge cycles. No action is needed beyond running those calibration cycles.

After the battery swap, the SH782 fuel gauge jumps around erratically — it reads 67%, then skips to 45%, then back up. How do I fix this?

The fuel gauge IC on the SH782 builds its discharge model from cycle history stored against the old cell. With a new cell installed, the IC is interpolating against a curve that no longer matches the actual chemistry, which produces the erratic percentage readings. This is a calibration issue, not a hardware fault. Run two complete discharge cycles — let the laptop drain to automatic hibernate each time, then charge uninterrupted to 100% — and the gauge IC will reset its model to the new cell's actual discharge profile.

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