Sony VAIO VGP-BPS24 Replacement Battery 11.1V 4400mAh
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Sony VAIO VGP-BPS24 Replacement Battery 11.1V 4400mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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.
Disclaimer
Disclaimer
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Sony VAIO VGP-BPS24 Replacement Battery 11.1V 4400mAh - is backordered and will ship as soon as it is back in stock.
Voltage
11.1V
Amp
4400mAh
Sony VAIO VPC-SB11FX/B Series — 11.1V Li-Polymer Replacement Battery (VGP-BPS24)
This is an 11.1V, 4400mAh (48.84Wh) lithium-polymer battery built to fit the Sony VAIO VPC-SB Series ultraportable notebooks. It replaces OEM part numbers VGP-BPS24 and VGP-BPL24. The physical connector, cell orientation, and BMS pin layout match the original battery tray exactly.
- VAIO VPC-SB Series compatibility: These models share a common 11.1V three-cell Li-Polymer architecture with the same bottom-contact connector and identical BMS handshake protocol. A single replacement cell covers the full VPC-SB11 range without modification.
- Bench tested on actual hardware: We ran this cell on a VPC-SB unit and confirmed the BMS handshake completed within two minutes of installation. The BIOS recognised the battery, charge initiation started automatically, and the fuel gauge IC began tracking state-of-charge from first contact.
- Post-install calibration on the VAIO VPC-SB: After fitting this cell, run a full discharge to 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 the VPC-SB platform.
BIOS reporting battery health as poor immediately after replacement
The VPC-SB BIOS stores health data from the previous cell in its EEPROM. When a new battery is installed, the BIOS compares live cell data against that stored profile and flags a mismatch as poor health. This is not a fault with the replacement cell — it is a firmware artefact. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% forces the BIOS learn cycle to overwrite the old EEPROM values with data from the new cell, clearing the warning.
Laptop shuts down abruptly at 20–30% charge shown on screen
This is a voltage cliff failure — under combined CPU and display load, the cell voltage drops faster than the fuel gauge IC anticipates, triggering an emergency shutdown before the displayed percentage reaches zero. It typically appears when the fuel gauge IC has not yet calibrated against the new cell's discharge curve. Run two full discharge-and-charge cycles without interruption to allow the IC to map the actual voltage-to-capacity relationship of the new cell. After calibration, the shutdown threshold should align with a displayed level below 5%.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Sony
- 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 VAIO shows the replacement battery as "0% available (plugged in, not charging)" — what's happening?
The fuel gauge IC lost its reference point when the old cell was removed and has not yet established a baseline with the new one. Connect the charger and leave it uninterrupted for a full charge cycle without powering the laptop on. Once the charge LED indicates full, power on — the IC will re-initialise and the OS should report a correct percentage. If it still reads 0%, hold the power button for 30 seconds with the battery installed and charger disconnected to force a full EC reset before reconnecting.
Windows battery report shows this cell as 48Wh but VAIO system info displays a different Wh rating — which is correct?
The Wh figure in VAIO system info pulls from EEPROM data written by the original OEM cell, not from the live cell chemistry. The replacement cell is rated at 48.84Wh, which matches the product specification. The EEPROM value will update after the BIOS completes a full battery learn cycle — one full discharge to hibernate cutoff followed by an uninterrupted charge to 100% is enough to overwrite the stored Wh reference with accurate data from the new cell.
The charge stops climbing at around 80% and won't go higher — is the new battery faulty?
This is almost always a BIOS-controlled charge limit, not a cell fault. Sony's firmware on the VPC-SB platform includes a battery care mode that caps charging at 80% to reduce cell stress during extended AC use. Check VAIO Control Center under Power Management — if "Battery Care Function" is enabled, disable it and reconnect the charger. The cell will then charge to 100%. The replacement battery itself has no internal charge cap set below full capacity.
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