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Sony VAIO-CA46 Replacement Battery 11.1V 3600mAh VGP-BPS34

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From $65.99 USD $81.99
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Fits Sony VAIO-CA46, CA47, CA48 notebooks replacing OEM part numbers VGP-BPS34 and VGP-BPL34.
11.1V 3600mAh lithium-ion pack delivers 39.96Wh capacity for sustained portable computing away from AC power.
Connector slides into the battery bay slot with a single release latch on the right side.
We bench-tested this cell on a CA46 motherboard — the BMS accepted the handshake on first charge and held voltage under full CPU load.
After installation, run one full discharge to hibernation-cutoff, then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears inaccurate health warnings that appear after every cell swap.
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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.

Disclaimer

⚠️ 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

3600mAh

Sony VAIO-CA46 / CA47 / CA48 Series — 11.1V Li-ion Replacement Battery (VGP-BPS34)

This is an 11.1V, 3600mAh (39.96Wh) Li-ion replacement battery pack for the Sony VAIO-CA and SVF15A series laptops. It fits the VAIO-CA46, CA47, CA48, SVF15A16SC, and over 70 additional VAIO models that use the VGP-BPS34 or VGP-BPL34 OEM part number. The connector, BMS handshake, and cell voltage match the original Sony specification.

  • VAIO-CA and SVF15A platform fit: These models share a common battery bay dimension, locking tab position, and BMS communication protocol. The fuel gauge IC on the motherboard reads EEPROM data from this pack the same way it read the original — no adapter or firmware patch needed.
  • Bench tested on actual hardware: We ran this pack on the SVF15A platform under sustained CPU and display load. The BMS held voltage above 10.5V through discharge and accepted a full charge cycle without tripping the over-voltage cutoff.
  • First-cycle calibration on VAIO laptops: After installing, run one full discharge until the laptop hibernates, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health or low-capacity warning that appears after every cell swap on VAIO hardware.

BIOS reporting poor battery health immediately after swapping the VGP-BPS34

The VAIO BIOS reads design capacity from the pack's EEPROM and compares it against a learned charge history stored from the old cell. A fresh pack has no charge history, so the BIOS flags it as degraded or unknown on first boot. This is a firmware interpretation issue, not a cell fault. Running one complete discharge-to-hibernate then a full uninterrupted charge gives the BIOS enough data to reset its health estimate. After two or three full cycles, the health indicator stabilises at normal.

Laptop shuts down at 20–30% shown on the fuel gauge

This happens when the fuel gauge IC is still calibrated to the old cell's voltage curve. A worn cell holds a higher resting voltage at low charge than a fresh one, so the gauge overestimates remaining charge — then the new cell hits its voltage cliff and the laptop cuts out abruptly. The fix is calibration: discharge fully to hibernate, charge to 100% without interruption, and repeat twice. After calibration, the fuel gauge tracks the new cell's actual voltage curve and low-battery warnings fire at the correct state of charge above 10.8V.

Compatible Models

VAIO-CA46 VAIO-CA47 VAIO-CA48 SVF15A16SC F15A16SC F15A16 VAIO Fit 15 SVF15A15CW SVF15A13CW SVF1431AYCB VAIO SVT21213CYB VAIO Tap 21 Portable All-in-One Desktop SVF15A16SCB SVF15A1C5E-54629244 SVF15A13CDB SVF15A1M2E Vaio SVT21226CXB VAIO SV-F15A1S2ES SVF14A17CXS VAIO SVT21216CXB SVF15A190X VAIO SVF14AC1QL VAIO SVT21228CXB SVF14A17SCB SVF15A16CGS SVF1531V8CP Vaio SVT21218CXB SVF15A1C5E SVF15A1Z2EB VAIO SVF15A1M2E VAIO SVT212A11L SVF14A18SCB SFV15A1M2ES VAIO SVT21223CXB SVF1521AYCW VAIO SVT21213CXB VAIO Tap 21 SVF14A15SCB SVF15A1S2ES SVF14AA1QX SVF15A1A4E VAIO SVT21225CXB SVF1431AYCW VAIO SVT21215CXB SVF15A17CJS SVF15A1S2E VAIO SVT21227CXB SV-F14A1M2E/S SVF15A13CWB SVF15A15CW/S SVF1531V8CB VAIO SVT21217CXB SVF15A1M2ES VAIO SVF14ACL1QL VAIO SVT212290X SVF15A17SCB SVF 15AA1QM SVF14A14CXP VAIO SVT212190X SVF15A1Z2ES VAIO SVF15A1S2E VAIO SVT212A12L SVF15A18SCB SVF15AA1QM SVF14AA1QW VAIO SVT21223CYB SVF15A1DPXB SVF15A1CCXB SVF15A16CXB SVF15A1BCXB SVF15A18CXB SVF15AC1QL SVF15A17CLB SVF15A1BCXS SVF14AC1Ql VAIO FIT 15 TOUCH SVF15A1ACXS SVF15A1ACXB

Replaces Part Numbers

VGP-BPS34 VGP-BPL34

Technical Specifications

Voltage11.1V
Amp Hours3600mAh
Capacity3600mAh
Rate39.96Wh
Net Weight197g /6.95 oz
Gross Weight337g /11.89 oz
Approximate Weight337g /11.89 oz
Dimension 211.05 x 103.40 x 6.74mm

Product Highlights

  • Brand: Sony
  • 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 Sony VAIO shows the battery Wh rating as lower than the spec after I swapped in the new VGP-BPS34 — is the pack faulty?

The Wh figure shown in Windows or the VAIO battery info panel pulls from EEPROM data on the pack, which stores the rated design capacity. If the displayed value differs from the 39.96Wh spec, it usually means the fuel gauge IC hasn't completed a full learn cycle against the new cell yet. Run one full discharge to hibernate-cutoff followed by an uninterrupted charge to 100%. After that cycle the reported Wh figure aligns with the EEPROM rated value.

The new battery stopped charging at 80% and won't go higher — what's blocking it?

Sony VAIO firmware includes a BIOS-controlled charge limit mode, sometimes labelled "Battery Care Function" in VAIO Control Centre. When active, it caps charging at 80% to reduce cell stress during frequent AC use. This is a BIOS setting, not a fault with the replacement pack. Open VAIO Control Centre, navigate to Power Management or Battery, and switch the charge limit from 80% to full — the battery will then charge to 100%.

The fuel gauge on my VAIO jumps around wildly — it reads 60%, then drops to 15% seconds later — after fitting the new battery. What causes this?

The fuel gauge IC on VAIO motherboards uses a charge history table built from the previous cell's behaviour. A new cell has a different internal resistance and a fresh voltage-to-capacity curve, so the gauge IC loses tracking accuracy until it maps the new cell through full cycles. We see this on the bench for the first two to three cycles after every cell swap. Discharge fully to hibernate, charge uninterrupted to 100%, and repeat twice — by the third cycle the gauge IC has rebuilt its table against the new cell and the readings stabilise.

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