My Samsung laptop had a battery that just unclips, no tools needed, and I replaced it twice in the 8 years I had it. This HP laptop is only 4-5 years old and the battery's been dead for half that time, but it's not replaceable without dismantling it. The battery used to last about 5 hours when it was new out of the box, but within 3-4months that was down to about 2 hours. I wanted another laptop with a replaceable battery, but they were virtually unobtainable by the time I bought this. All sorts have been sacrificed to the God of Miniaturisation: replaceable battery, DVD drive, numeric keypad, half the USB ports, separate ear & mic jacks, and now I see that the current ones often don't have ethernet or USB-A.