Normal batteries wear over time — the more you charge and recharge them, the less effective they are. But the new system showed that, unlike regular batteries, which, after a few hundred charge cycles only contain a small amount of charge, it can withstand 200,000 charge cycles over three months while only losing 5 percent of its volume.
apple
Apple WWDC 2014
VideoFor all my friends & others asking why Im using mac… take a large bowl of popcorn and press play… also on http://www.apple.com/apple-events/june-2014/