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Sony VAIO Duo 13 VGP-BPS36 Replacement Battery 7.5V 6300mAh

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Sale priceFrom $169.99 USD Regular price $205.99
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Fits Sony VAIO Duo 13 convertible ultrabooks; replaces OEM part VGP-BPS36.
7.5V, 6300mAh capacity delivers 47.25Wh — matches original pack output for full-day portable use.
Connector and locking tab match the original slot orientation; no adapter needed.
We bench-tested this cell against SVD1322ZPWR and SVP1321ZPWR units; BMS accepted the new pack after first power-on.
After installation, discharge fully to hibernate cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears the inaccurate health warning that appears post-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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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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⚠️ 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

7.5V

Amp

6300mAh

Sony VAIO Duo 13 — 7.5V Li-Polymer Replacement Battery (VGP-BPS36)

This is a 7.5V Li-Polymer battery rated at 6300mAh (47.25Wh), built to replace the original VGP-BPS36 pack in the Sony VAIO Duo 13 convertible ultrabook. It fits the SVD1322ZPWR, SVP1321ZPWR, SVD13236PW, and related SVD/SVP13-series models. Install it when the original cell no longer holds a working charge through a normal computing session.

  • VAIO Duo 13 / SVD13 platform fit: These models share the VGP-BPS36 form factor — same flat Li-Polymer profile (278.30 × 115.50 × 5.50mm), same 7.5V rail, and the same BMS handshake the VAIO EC expects on startup. SVD and SVP13 variants that shipped with this pack accept this cell without modification.
  • Bench tested on actual hardware: We cycled this cell through full charge and discharge on a VAIO Duo 13 chassis and confirmed the BMS communicated capacity data correctly to the firmware. The protection circuit tripped as expected at low-voltage cutoff with no false shutdowns mid-cycle.
  • Post-install calibration on the VAIO Duo 13: After fitting this cell, run one full discharge to hibernate cutoff, 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 on this platform.

BIOS reporting poor battery health immediately after fitting the VGP-BPS36

The VAIO firmware reads health data stored in the old cell's EEPROM and compares it against the new cell's reported state. A fresh cell with no cycle history triggers a mismatch flag, so the BIOS displays a degraded-health warning even though the cell is new. This is a firmware calibration issue, not a fault with the replacement pack. Run a full discharge-to-hibernate then a full uninterrupted charge to 100% — the BIOS learn cycle will reset and the warning clears on the next boot.

VAIO Duo 13 shutting down at 20–30% charge shown on the fuel gauge

This happens when the fuel gauge IC is still calibrated to the old cell's voltage curve. The gauge reads 20–30% remaining, but the IC is mapping that percentage against a degraded cell's capacity profile — so the actual voltage has already dropped below safe operating threshold. Under combined CPU and display load, the voltage cliff arrives faster than the inaccurate gauge predicts, and the laptop cuts out to protect the circuit. Run two or three full discharge-to-hibernate and charge-to-100% cycles so the fuel gauge IC recalibrates against the new cell's actual voltage curve.

Compatible Models

VAIO Duo 13 SVD1322ZPWR SVP1321ZPWR SVD13236PW SVD13216PW SVD13211CW SVD1323XPGB SVD1321BPXB SVD132A14W SVD13211CGB SVD1323YCGW SVD132A14L SVD13211CG

Replaces Part Numbers

VGP-BPS36

Technical Specifications

Voltage7.5V
Amp Hours6300mAh
Capacity6300mAh
Rate47.25Wh
Net Weight275.6g /9.72 oz
Gross Weight535.6g /18.89 oz
Approximate Weight535.6g /18.89 oz
Dimension 278.30 x 115.50 x 5.50mm

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

The VAIO Duo 13 shows the new VGP-BPS36 as 0% or "unknown" in battery status — is the cell dead?

No — the OS fuel gauge IC is still reading against the old cell's stored data. This shows up immediately after a swap on the VAIO Duo 13 because the EEPROM data from the original pack no longer matches the new cell's chemistry profile. Run a full discharge to hibernate cutoff, then charge uninterrupted to 100% without pulling the adapter. After one or two full cycles, the gauge IC recalibrates and the percentage reads correctly.

Windows is showing the wrong Wh rating for this battery — it says 42Wh but the pack is rated 47.25Wh. Which is correct?

The 47.25Wh figure in the product data is correct. What Windows displays is pulled from the EEPROM on the cell, and the value stored there reflects the rated design capacity used by the original manufacturer — this can differ from the actual chemistry capacity by a few watt-hours. The discrepancy does not affect how the cell charges or discharges. After two full calibration cycles the reported figure typically moves closer to actual, but even if it stays at 42Wh on screen, the cell is delivering its full 47.25Wh.

The VGP-BPS36 stopped charging at 80% and won't go higher — is the new cell faulty?

Not necessarily — the VAIO Duo 13 BIOS includes a battery care charge limit that caps charging at 80% when activated. Check VAIO Control Center under Battery Care Function and confirm the limit is set to Full Charge rather than Standard. If that setting is already off and the cell still stops at 80%, force a full discharge to hibernate cutoff and let it charge uninterrupted to 100% once — this clears the charge-limit flag the firmware sometimes carries over from the old cell's stored state.

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