Thor Brand Replacement 12 Cell 10.8v 8800mah Battery Pack for Compaq Presario Pc Laptop Computer Cq61-410us Cq61-411wm Cq61-412nr Cq61-414nr Cq61-420us Cq61-429us Cq61-441se Cq61z Cq61z-300 Cq61z-400 1 year warranty 8800mah high quality