CWK High Performance Battery for Dell T54F3 Laptop Notebook Computer PC - 5200mAh (4400mAh compatible) 58Whr 24 Months Warranty Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 11.1 Volt (10.8 Volt compatible) Capacity: 5200mAh (Better than 4400mAh) 90 Day Money Back. Buy with confidence!