CWK 7800mAh 9 Cell New High Capacity Battery for Lenovo IdeaPad Y450 Y450G Y450A Y550 Y550A Y550P Y450 Lenovo Ideapad Y550 Y550A L08S6D13 L08O6D13 L08L6D13 Lenovo Ideapad Y450 Y450a Y550 Y550P L08O6D13 L08S6D13 IBM Lenovo Ideapad Y450 Y450a Y450g Y550 Y550A Y550P Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 10.8 Volt (11.1 Volt compatible) Capacity: 7800mAh (Better than 6600mAh) 90 Day Money Back. Buy with confidence!