The standard way to read out the battery life on a Windows Mobile smartphone is a small icon on the top, which has 3 indicators to show, how the battery life is:

 

This is not really a helpful information. Today, I found a small, simple but incredible program (open source), which is the best battery program I’ve seen so far. It’s called Batti and it’s hosted on Google (http://code.google.com/p/batti/).

 

This program adds a 2-3 pixel deep line at the top. The line is coloured and has a gradient. With this line, I see know always, how many battery I’ve left. This is just nice.