Laptop Battery for Sony SVF143A1QT / A2TT / SVF1431AYCW / A1ST / BPS35A 11.1V 4400mAh / 5000mAh High Capacity, 2-Year Warranty

**Product Overview**
This high-performance replacement battery is specifically designed for Sony VAIO SVF143 series laptops. It is a direct drop-in replacement for the original Sony BPS35A battery, ensuring full compatibility with models such as SVF143A1QT, SVF143A2TT, SVF1431AYCW, SVF143A1ST, and other SVF143 variants. Whether your original battery no longer holds a charge, swells, or fails to power on, this battery restores your laptops portability and performance.

**Important Voltage Warning**
Please verify your original batterys voltage before purchasing. This battery is rated at ** 11.1V **. If your original battery is 7.6V or 14.8V, this product will NOT work and may cause damage. Always check the label on your old battery or consult your laptops specifications.

**Compatibility List (Partial) **
- Sony VAIO SVF1431AYCW
- Sony VAIO SVF143A1QT
- Sony VAIO SVF143A2TT
- Sony VAIO SVF143A1ST
- Sony VAIO SVF1431A1ST
- Sony VAIO SVF1431A2TT
- Sony VAIO SVF1431A1QT
- Sony VAIO SVF1431A1CW
- Sony VAIO SVF1432 series (select models)

**Replacement Model Numbers**
- Sony BPS35A
- Sony BPS35
- Sony VGP-BPS35A
- Sony VGP-BPS35

**Specifications Table**
| Parameter | Value |
|-----------|-------|
| Voltage | 11.1V |
| Capacity | 4400mAh / 5000mAh (varies by batch) |
| Cell Type | Lithium-Ion |
| Color | Black |
| Weight | Approx. 320g |
| Warranty | 2 Years |

**Comparison Table: Original vs Replacement**
| Feature | Original Sony BPS35A | Our Replacement |
|---------|---------------------|-----------------|
| Cell Quality | Standard Grade A | High-Grade A Cells |
| Capacity | 4400mAh | 4400mAh / 5000mAh |
| Safety Protection | Basic | Overcharge/Discharge/Short Circuit/Temperature |
| Warranty | 1 Year (typical) | 2 Years |
| Price | High | Affordable |

**Installation Tips**
1. Power off your laptop and unplug the AC adapter.
2. Remove the battery latch or slide the release button (depending on your model).
3. Gently lift the old battery out of the compartment.
4. Align the new battery with the connector and slide it into place until it clicks.
5. Plug in the AC adapter and charge the battery fully before first use (about 4-6 hours).
6. For optimal lifespan, avoid letting the battery drain completely; recharge when it reaches 20-30%.

**Whats in the Box**
- 1x Replacement Battery for Sony SVF143 Series
(with safety instructions)

**Note**
This product is a third-party replacement, not an original Sony item. It is fully tested and certified to meet or exceed OEM specifications. If you have any questions about compatibility, please contact us with your laptop model and original battery part number before purchasing.