Go to Amazon.com : http://www.amazon.com/gp/product/B00JBRU4TK?tag=theatrecat-20
TOSHIBA Satellite M645-S4065 M645-S4070 M645-S4080 Laptop Battery - Premium Superb Choice?
Type Li-ion Voltage108V Capacity8800mAh12 cells
1 year replacement warranty30-day refund guarantee after the purchase
High Capacity Replacement battery
Each Superb Choice battery was tested at an original laptop by the manufacturer