Wakelocks in Android N Beta

I appear to be having wakelocks in the Beta that I wasn't having in MM using exactly the same set up/apps etc. Can anyone advise how you can diagnose wakelocks? Is there a particular app I need?

(In the case of the attached I realise the poor cellular connection was hitting the battery too.)

Thanks.

Moved to the Android N forum.

Originally Posted by B. Diddy

Moved to the Android N forum.

Thanks. Didn't see the forum.