CWK&reg; Battery for Toshiba Satellite L635 L640 L645 L735 L740 L745 L750 L755 L770 M300 M500 M640 Mini P750 P770 M800 M900 U400 U405 U500 U505 Pa3817U-1Brs Pa3818U-1Bas Pa3819U-1Bas 5200mah 6 Cell Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 10.8 Volt (11.1 Volt compatible) Capacity: 5200mAh (Better than 4400mAh) 90 Day Monday Back Guaranteed. Order with Confidence.