Unfortunately, those of us on the Droid 2 can't reap the benefits of Kejar's Droid X tweaks for better battery life. We can, however, use the Liberty-themed circle battery icon that was included in that modified framework-res.apk file. Since this comes from Kejar himself, this is as close to an official circle battery icon for Liberty as it gets! I've made this available as a Metamorph theme (attached). Save this file to /sdcard/AndroidThemes and open it inside the Metamorph application. For those of you who prefer an unbroken circle instead of this segmented one, check out these ones that I made.