C31-X402 Battery for Asus Laptop - 11.4V 4000mAh 3-Cell Li-Ion
€34.99
Tax included
The C31-X402 battery is a replacement for Asus VivoBook laptops with 11.4V and 4000mAh (44Wh). Compatible with models such as S300, S400, X402 and part numbers like 0B200-00300400. It is a new product, with a 3-year warranty and shipping from Spain in 24-48 h.
C31-X402
C31-X402 Battery for Asus Laptop - 11.4V 4000mAh 3-Cell Li-Ion
New replacement battery for Asus VivoBook S300/S400, 3-year warranty.
- 4000 mAh / 44 Wh
- 11.4V
- New
Key features
-
Capacity
4000 mAh / 44 Wh for reliable autonomy.
-
Nominal Voltage
11.4V, compatible with 11.1V systems.
-
Technology
3 high-efficiency Li-Ion (Lithium-Ion) cells.
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Compatibility
Designed for Asus VivoBook S300, S400, and X402.
Product description
The replacement battery with reference C31-X402 is specifically designed for Asus laptops, offering a reliable solution to replace an exhausted or defective battery. With a voltage of 11.4V, it is compatible with systems using 11.1V, ensuring a perfect fit and stable performance.
This battery has a capacity of 4000 mAh (44 Wh) and is built with 3 Li-Ion cells, which ensures adequate autonomy for daily and professional use. It includes overcharge and over-discharge protection circuits to protect both the battery and the laptop, extending the lifespan of both components.
It is a new component, individually inspected by our technical service in Spain before being shipped. This process ensures that each unit complies with capacity, voltage, and safety standards, guaranteeing optimal performance from day one. It comes with a 3-year warranty.
To ensure maximum compatibility, it is essential to verify the part number printed on your original battery. If it matches C31-X402 or 0B200-00300400, this battery is the correct one for your device. If you have any doubts, our technical team can help you confirm compatibility with your laptop's exact model.
Who is this product for?
For technical services and individual users who need to replace the battery of an Asus laptop from the VivoBook S300, S400, or X402 series to restore its autonomy.
Ideal for
- Replacement of an exhausted battery in an Asus VivoBook S400CA.
- Repair of an Asus X402C laptop that does not hold a charge.
- Restore the portability of an Asus S300 for mobile use.
- Preventive maintenance on F402CA series devices.
Technical specifications
| Voltage | 11.4 V |
|---|---|
| Capacity | 4000 mAh |
| Energy | 44 Wh |
| Cell technology | Li-Ion |
| Number of cells | 3 |
| Color | Black |
|---|
| Condition | New |
|---|---|
| Overcharge protection | Yes |
| Over-discharge protection | Yes |
Compatibility
Compatible part numbers
- C31-X402
- 0B200-00300400
Compatible laptop models
- Asus VivoBook S300
- Asus VivoBook S300C
- Asus VivoBook S300CA
- Asus VivoBook S400
- Asus VivoBook S400C
- Asus VivoBook S400CA
- Asus VivoBook S400E
- Asus F402CA
- Asus S400CA-CA021H
- Asus X402
- Asus X402CA
- Asus X402C
Always check the part number printed on your original part before ordering; if in doubt, contact us with the exact model of your device.
Frequently asked questions
My original battery is 11.1V, can I use this 11.4V one?
Yes, it is fully compatible. Small voltage variations between 10.8V, 11.1V, and 11.4V are normal in 3-cell batteries, and laptops are designed to manage them without any issues. Performance and safety will not be affected.
Is it necessary to calibrate the battery the first time I use it?
Yes, a calibration cycle is recommended. Charge the battery to 100%, let it rest for an hour, then use it until the laptop shuts down due to low battery (at 5%). Finally, charge it back to 100% without interruptions. This helps the operating system recognize the battery's actual capacity.
What warranty does the battery have and how do returns work if it doesn't suit me?
The battery has a 3-year warranty for private customers and 1 year for professionals. If it is not compatible, you have 14 days to return it. You can send the product on your own or request a home pickup for 8,90 € in Spain and Portugal, which will be deducted from the refund.
How long will my order take to arrive?
All our products are shipped from our warehouse in Spain. For orders in Spain and Portugal, the delivery time is 24 to 48 business hours. For other EU destinations, such as France or Germany, the delivery time may vary between 2 and 5 business days.
Warranty, returns and shipping
- Warranty: 3-year warranty (1 year for business customers)
- Returns: 14-day returns (ship it yourself or €8.90 home pickup in Spain and Portugal)
- Shipping: EU delivery 48-120 h
- Condition: New
BAT-AS87
Data sheet
- CG. Reference
- BAT-AS87
- CG. Type of piece
- Laptop Battery
- CG. State
- New
- CG. Warranty
- 3 years
- CB. Voltage
- 11.4V
- CB. Number of cells
- 3
- CB. Cell technology
- Li-Ion
- CB. Color
- Black
- CB. Capacity
- 4000 mAh
- CB. Overload protection
- Yeah.
- DJ. Compatible brand
- Asus
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C31-X402 replacement battery for Asus laptops. Offers 11.4V and 4000mAh (44Wh) with 3 Li-Ion cells. Compatible with Asus VivoBook S300, S400, and X402 series. New component, inspected in Spain and with a 3-year warranty.
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