Change Low Battery Notification?

Try going to  menu / settings / sound profile / normal      in the top right drop down box select phone and turn phone volume all the way down. You will probably also want to turn keypad tone on mute and power on and off on mute.  Not sure if this will silence the battery alert, but it silences most all other sounds.

You can also try silent under sound profile. Haven't checked it out, but it might silence the battery alert.
Wife uses this profile in meetings, but hasn't ever had the battery run low. I would hope samsung would
have thought of this and make the battery alert silent under this profile.

I've tried the silent mode and all that did was buzz, which is a bit better than the beeping. But I'll try the other way too. Unfortunatly, I'm not holding out much hope, since my friend with an Impression doesn't have a way to silence it 
Thanks!

Yeah, I'm waiting for my case to come in. Should be here soon! Although for the time being, if I put it in buttons up, it won't turn on, so it's a good temporary solution.