Short battery life is one of the issues on HTC HD2 no matter in Windows Mobile or Android. There is Touch X battery indicator with 1% increments for Windows Mobile. And here is another one for Android ~ Circular battery Indicator with %. And no root is required.
With this percentage battery indicator on top left corner, you don’t need to click on the Battery at Settings – About phone in order to see the battery level left. Further more, it displays current battery health, phone temperature and voltage when pull down the notification bar.
Download Circular battery Indicator with % here.