Thanks to the Preview for Developers program we’ve been playing with Windows Phone 8.1 for more than three days. It’s been very well received by most everyone in the community. Now it’s time to check out how your battery is doing after upgrading from Windows Phone 8.0 to Windows Phone 8.1. Has your battery life improved or taken a turn for the worst? Maybe is it just the same as it was before. Let’s find out.