GFI Replacement Laptop Battery for Toshiba PA3817U-1BRS 10.8V 48WH 6-cell Battery Battery type: Li-ion; Capacity: 5200mAh/58WH; Cells: 6-cell; Voltage: 11.1V; 100% Brand new from manufacturer. Under 100% Aging Test. Up to 500 cycles life, low self-discharge, CE/FCC/RoHS certified for product safety. 24/7 email support, 12-month hassle-free warranty. Use the keyboard shortcuts Ctrl+F to quickly crosscheck if your requested model is listed in the Fits Compatible Model List. Operation time for standard batteries(6-Cell, 4400mAh): Around 2 hours, the actual operation time will depend on how much electricity is required by the device and how you use it.