So I've had my MacBook for a little over a year now, and for some reason I haven't seen over two hours on the battery in ages. I thought even older MacBooks got at least three-ish hours I usually have WiFi and Bluetooth on but I don't think that should make a huge difference. I looked at the battery in System Profiler and it says it has 5213 mAh Full Charge Capacity after 174 cycles, which I've read is almost normal. I always run it on "Better Battery Life" when it's unplugged and keep the screen on the lowest brightness, and make sure to close unused applications. So why am I only getting around 1:50 on a full charge? People have told me that leaving the adapter plugged in after it's at full charge can be detrimental, but again I didn't think that could cause such a drastic drop in battery life. (I like to charge it overnight when I'm not using it so it might stay plugged in at green for a while usually.) I have read the Apple support article on recalibrating the battery and followed the instructions about a week ago, charging it to full, letting it run out of power, leaving it to sit for about 5 hours and charging it up again. Didn't really fix anything Any advice is much appreciated. I hope my battery isn't just a dud!