I was reading in an online article about 3rd parties that have been creating external battery backups by splicing them with original apple magsafe adaptors. In the same article I read that some company had created their own magsafe type adaptor for the same reason, but that it didn't violate Apple's patent because the 3rd party adapter could only power the MBA, not charge it. My question is, if something like this (2nd paragraph) exists, wouldn't it be better to use in a situation where my MBA is at a desk, plugged in most of the time, so that the battery isn't degraded? Let me reiterate a little bit, wouldn't it be better to have an AC adapter power cord (NOT Battery Pack as mentioned above) to keep your MBA powered on, without involving the batter? For now, I am leaving my MBA in till it's charged, then unplugging it until its discharged, repeat. Its kind of a pain as I end up doing it several times a day, and occasionally when I need to go somewhere, the battery isn't charged (as its in the discharge cycle). Anyone have any information on this?