HTC HD2 battery capacity is below average. It only has 1230 mAh capacity. Therefore, as one of the HTC HD2 users, I installed Touch X battery indicator with 1% increments.
With this percentage battery indicator on right top corner, you don’t need to click on the battery in order to see the actual battery percentage left. It will turn to yellow colour when below 30% and red colour in 0-10% range.
Download Touch X battery indicator here.