Article — MagSafe

The power adapter might become very warm during normal use. They do get very hot when charging and running near 100% CPU. Especially you are playing games.  It's normal, it wouldn't be concerned until you saw it melting or smelled something burning. You can expect that both the computer and the adapter will heat up more than usual whenever you're playing a processor- and/or GPU-intensive game, and even more than that if you're trying to charge the battery at the same time. But your adapter should never be hot enough to burn you. All MagSafe power adapter have over-current, over-voltage and...

You may heard of these questions like “Can I use an 85W MagSafe power adapter to safely charge my MacBook Air?” , or “Can I use the high wattage MagSafe to my mac which need the low wattage?“。The answer is following and very clearly. Yes, you can If the ports of the adapter fit . For all this kind of questions, Apple’s office answer is “You can use a compatible higher wattage adapter without issue, but it won't make your computer charge faster or operate differently.” Link is Here: http://support.apple.com/kb/HT2346   We’d like to mention that the only advantage for use...