Before anybody accuses me of not searching this situation, believe me, I did search. Found a few responses that were sort of relevant, but my MBP's case seems pretty extreme compared to others. I have had this computer for a few months and today I check to see the battery and it shows the icon saying it's fully charged at only about 34%?! I have calibrated it before, but honestly not as much as I should have, but still. Then, I unplug the charger (which is glowing a pretty dim green, not as bright as it should be and it's green at 34% ???) and it goes to sleep or goes to a black screen. Plug it back in, press the power button to get it up, and it shows the battery's charged full (the icon at the top right) but it is only at 0% this time! After looking at iStat Pro, it says the charger's plugged in, been through 109 cycles, it's "Calculating" the battery life still (been doing this for minutes now), the charge is at 0%, and the Battery Health is at only 15%. I'm confused. I'm beginning to think my dog getting a hold of the charger tip (where it plugs into the MBP) had a big part in messing it up. I don't know when it started either. Looking at the charger, it has a few scuffs, but I'm not sure if plugging it in like this would really drop the battery's health down to 15%? The notebook runs with the charger plugged in, goes to a blank screen (off/sleep) when it isn't. Just noticed this now. I'd definitely appreciate any insight upon this situation. I don't have any idea what the problem is. I was thinking of maybe re-calibrating it, but I'm not sure if this would work as the battery seems drained as soon as I unplug it. Maybe leave it off for the 5 hours or so? Or will this not help the battery health at all? Last time I checked the battery life (not even sure when though), it was around 98%-100% though. Is a new battery needed? A new adapter perhaps? Please help with this as soon as possible. Thanks in advance.