APQ 8800mah 12 Cells Laptop Battery Replacement for Toshiba Equium U400 Series, Portege M800 Series, Satellite L310, M300, M305, U400, U405, U405d Series, Satellite Pro M300, Pro U400 Series Type: Li-ion | Voltage: 10.8V Capacity: 8800mAh Battery Cells: 12 cells Weight: 640g Harmless, and the use of safety features battery.