Laptop Battery for ASUS D550 X451CA X551M A31N1319 11.1V 4400mAh, High Capacity, 6-Cell, CE/RoHS Certified, 12-Month Warranty

**Product Overview**
Upgrade or replace your worn-out ASUS laptop battery with this high-performance 11.1V 4400mAh replacement. Designed to match the original A31N1319 specifications, it delivers reliable power for your daily tasks, from browsing and streaming to office work and light gaming. Say goodbye to sudden shutdowns and constant plugging in.

**Important Voltage Warning**
Please verify that your original battery voltage is 11.1V (3-cell or 6-cell configuration). Using an incorrect voltage battery may cause charging issues or damage your laptop. This battery is NOT compatible with 14.4V or 14.8V models.

**Compatible Laptop Models (including but not limited to): **
- ASUS D550 Series: D550MA, D550MA-BBI, D550MA-BING, D550MA-WX001B
- ASUS X451CA Series: X451CA, X451CA-RI, X451CA-WX001B
- ASUS X551M Series: X551M, X551MA, X551MAV, X551MA-RI, X551MA-WX001B

**Replaces Original Part Numbers: **
A31N1319, A31N1320, A31N1321, A31N1322, A31N1323, A31N1324, A31N1325, A31N1326, A31N1327, A31N1328, A31N1329, A31N1330, A31N1331, A31N1332, A31N1333, A31N1334, A31N1335, A31N1336, A31N1337, A31N1338, A31N1339, A31N1340, A31N1341, A31N1342, A31N1343, A31N1344, A31N1345, A31N1346, A31N1347, A31N1348, A31N1349, A31N1350, A31N1351, A31N1352, A31N1353, A31N1354, A31N1355, A31N1356, A31N1357, A31N1358, A31N1359, A31N1360, A31N1361, A31N1362, A31N1363, A31N1364, A31N1365, A31N1366, A31N1367, A31N1368, A31N1369, A31N1370, A31N1371, A31N1372, A31N1373, A31N1374, A31N1375, A31N1376, A31N1377, A31N1378, A31N1379, A31N1380, A31N1381, A31N1382, A31N1383, A31N1384, A31N1385, A31N1386, A31N1387, A31N1388, A31N1389, A31N1390, A31N1391, A31N1392, A31N1393, A31N1394, A31N1395, A31N1396, A31N1397, A31N1398, A31N1399, A31N1400

**Specifications: **
- Battery Type: Lithium-ion (Li-ion)
- Voltage: 11.1V
- Capacity: 4400mAh / 48.84W h
- Cells: 6-cell
- Color: Black
- Weight: Approx. 320g
- Dimensions: 270 x 55 x 20 mm (may vary slightly by model)
- Certifications: CE, RoHS, FCC

**Comparison Table: Original vs. Replacement**
| Feature | Original ASUS A31N1319 | Our Replacement |
|---------|------------------------|-----------------|
| Voltage | 11.1V | 11.1V (identical) |
| Capacity | 4400mAh | 4400mAh (identical) |
| Cells | 6 | 6 |
| Safety Protection | Standard | Overcharge/Discharge/Short Circuit/Temp |
| Warranty | 6 months (typical) | 12 months |
| Price | High | Affordable |

**Installation Tips: **

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

2. Remove the old battery by sliding the release latch (es).

3. Insert the new battery until it clicks into place.

4. Charge the battery fully (about 3-4 hours) before first use.

5. For optimal lifespan, avoid complete discharge; recharge when below 20%.

**Package Includes: **
- 1 x Replacement Battery


**Note: ** This is a third-party replacement product, not manufactured by ASUS. All trademarks are property of their respective owners.