Android phones, apps and tablets

I rooted my S2 recently to Cyanogen 10.1 as android 4.1 was eating all my battery. It's all good and the battery lasts longer, but now my Barclays app doesn't work, which is really annoying as I use it all the time.

What difference have you noticed in the battery? Not sure if I am at the moment. Travelling for most of the day today light usage few pictures texts calls checking the web and I got 16 hours.

Is that good? Or is it worth me checking a battery app to see if I can get more out of it?