Replacement 6 Cell Battery Power Pack for Acer Aspire Laptop Computer 4520-5458 4520-5464 4520-5558 4520-5582 4520-5584 4520-5605 4520-5668 4520-5675 4520-5699 4520-5713 4520-5726 4520-5746 4520-5785 4520-5802 1 year warranty Compatible to oem 6 Cells Quality Value