I was happy with this laptop all through setting it up, but I had it plugged in and charging during that time. Once the battery was fully charged, I turned the laptop off and set it aside, expecting to use it soon. Circumstances changed and it sat for some weeks before I remembered it and figured I'd exhaust the battery and charge it back up to try to maintain battery health. So I turned it on unplugged, set it to never sleep, and set a long video playing on Youtube to drain the battery faster.The battery indicator was just barely a hair below full when I started (I didn't check percentage). I kept an eye on the indicator intermittently, and over the next half hour it dropped to no less than 75%. Then the laptop suddenly switched off (OFF, not asleep). I turned it back on to see a screen telling me the battery was low, and told it to proceed anyway. A moment later, it had fully started up and the battery indicator showed low battery, 6%.So it lost nearly 25% of battery in half an hour, then abruptly dove from ~75 straight to 6% and shut itself off in moments. Half an hour until the battery gets low enough that it shuts itself off--that isn't even anywhere near 50% original battery capacity. I am NOT happy. At least it still works while plugged in, but too much of that will make the already-trash battery more likely to go bad and become dangerous.