Hiport Laptop Battery For Fujitsu Lifebook CP245377-01, CP245377-XX Laptop Notebook Computers (Secondary) Cells: 6 Cells Volts: 10.8V Capacity: 3800mAh; 41Wh Type: Secondary Modular Bay Battery - This battery replaces the CD drive to allow you to run two batteries at the same time. This item is not a replacement for the standard battery.