Battery for ASUS U303L UX303L UX303LA UX303LN UX303LB UX303LBN UX303UA Q302L Q302LA C31N1339 11.4V 48Wh Li-ion [2-Year Warranty]

**Important
Voltage Warning: **
Please confirm your original battery voltage is ** 11.4V ** before ordering. Using an incorrect voltage battery may damage your device. This battery is NOT compatible with 7.6V or 14.8V models.

**Compatibility List: **
ASUS U303L Series: U303L, U303LA, U303LN, U303LB, U303LBN, U303UA
ASUS UX303L Series: UX303L, UX303LA, UX303LN, UX303LB, UX303LBN, UX303UA
ASUS Q302L Series: Q302L, Q302LA
Replaces Original Part Numbers: C31N1339, C31P1339, 0B200-03160000, 0B200-03160100

**Specifications: **
- Battery Type: Li-ion (Lithium-ion)
- Voltage: 11.4V
- Capacity: 48Wh / 4200mAh
- Cells: 3-cell
- Color: Black
- Connector: 6-pin
- Dimensions: Approx. 270 x 60 x 5mm ( 10.6 x 2.4 x 0.2 inches)
- Weight: Approx. 220g ( 7.8 oz)

**Comparison Table: **

| Feature | Our Battery | Generic Low-Cost Battery |
|---------|-------------|--------------------------|
| Voltage | 11.4V | Often mismatched ( 7.6V / 14.8V ) |
| Capacity | 48Wh | 36-44Wh (lower runtime) |
| Cell Grade | Grade A (new) | Grade B or recycled |
| Protection | Overcharge/over-discharge/short circuit/overheat | Basic or none |
| Warranty | 2 Years | 6-12 months |

**Installation Tips: **

1. Power off your laptop and unplug the AC adapter.

2. Remove the back cover (screws may vary by model keep them organized).

3. Disconnect the old battery cable and remove it.

4. Insert the new battery, reconnect the cable, and secure the cover.

5. Charge to 100% before first use for optimal performance.

**Note: ** If your laptop does not recognize the battery after installation, try
a hard reset: disconnect AC power, remove battery, hold power button for 30 seconds, then reinstall battery and power on.

**Package Includes: **
1 x Replacement Battery for ASUS U303L/UX303L/Q302L Series

1 x Installation Guide (digital)

**Warranty & Support: **
We offer a 2-year warranty and 30-day hassle-free returns. If you have any questions about compatibility or installation, please contact us were here to help!