Heavy user. Bought a new rMB the first day they came out. Use the heck out of it. Never care about battery management. Charge it fully when it's drained. Here are the Coconut Battery Stats this morning: Cycles: 700 Full Charge Capacity: 3917 mAh Design Capacity: 5263 mAh Percent of Original Battery Capacity: 73.9% OS X Battery Status: Check Battery This battery has had it folks. I have Applecare and will get it replaced next month when I take it in to get a bunch of keys replaced as well. I'm not disappointed. I travel to all 50 states and am on the road nearly weekly and this little computer is with me everywhere. It fits nicely on airplane trays and I use inflight WiFi all the time with it. I watch movies, listen to music and play games on it. I do email, surf the web and use Excel and Word for work all the time. It just works perfectly for me. I'll post final battery stats the day I take it in for replacement.