The battery doesn't last long and changing it is complicated. The battery is internal so the case has to be pried (literally) apart. You can use gift cards to do the prying but you risk breaking clips that hold the case together. There are 11 screws in varying sizes to keep straight. The DVR has to be removed during dismantling. I've never owned a laptop that goes through a battery very fast, or one that has to be dismantled to do something that should be simple.