Question about 550EX flash??

My question is that i just got my 550EX flash about 4 weeks ago and for some reason when ever i take a picture the flash makes a really nice noise now i know the normal noice it makes when it charges back up but this noise seems to be a bit lougher now is this a sign that the battery are gettting low or is there something wrong with the flash itself any input would be great thanks

Csst

Mine should arrive Thursday, I'LL let ya know.

The best sing of low battery power is a longer recycle time for a flash of equal brightness and distance. Watch how long it takes for the ready light to come back on after a shot.

Also note that as the batteries get weaker, the flash will still recycle for the next shot but won't have as strong a flash available as with fresh batteries. You will lose range.

ok thanks for all your replys this sound i'm hearing shouldn't be anything i should be to consided about than right just need to rechange my batties i was just getting a little worried when i heard the sound i thought something was wrong with the flash.