I just recently bought a K42J-A1 Asus Laptop, and the battery lifetime is around 3-4 hours on battery saving mode. Can anyone suggest me a battery which can last longer than the one I have and is compatible with the K42J-A1. Thanks!
More aboutneed battery
How many cells is the current battery? If it is 4 cell, you can move up to either a 6 or 9 cell battery, if Asus makes them for that particular model.