Battery dying fast on 3g with 3.0 jailbreak & ultrasnow.....

[The1TexasRanger]

I just updated my 3g with 3.0 and jail broke in order to use ultrasnow. Everything works great except for the battery life. I let is sit all night locked with almost a full battery and by morning it has only a quarter left! Doing nothing. Is there anyone else having this problem? Can the battery life be improved?
Thanks.