What is あっちゃう in this sentence?

Question

My friend sent me an email saying her mobile phone is having problems. Specifically, she said this:

携帯{けいたい}の電池{でんち}が電話{でんわ}すると5分{ふん}でなくあっちゃうようになった

I get the overall meaning, which is that when she makes a call, the battery runs out of power after only 5 minutes.

However I can't parse でなくあっちゃうようになった, specifically the あっちゃう part.

What is going on here, and how is it different from　携帯{けいたい}の電池{でんち}が電話{でんわ}すると5分{ふん}でなくなる?

(Please no overly technical linguistic terms. Thanks!)

sounds like the contracted form of ~てしまう for ~なくあって. But I'm not sure if "~なくあって" should exist. (There is ~なくて,　~なかった, but I'm not sure if there is a past+て-form. To my current knowledge it's not possible to have both past and て-form simultaneously.)

sawa · Accepted Answer · 2011-10-19 04:27:56Z

up vote 6 down vote accepted

As Flaw comments, this is a typo of 5分でなくなっちゃう, which is a contracted form of 5分でなくなってしまう 'unfortunately, runs out in five minutes'.

edited Oct 19 '11 at 4:27

answered Oct 19 '11 at 4:16

sawa
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