Help How to determine battery usage?

[dantheman7]

What is the best way to determine what is using my battery? I know I can go to Settings | About phone | Battery | Battery Use and see usage to a certain extent. But what if I want something more granular? Usually, the largest percentage of usage is by the Android System, is there a way to see which components may be using the most?

Thanks

 

[sabrewings]

Battery Left can take you to the more detailed usage.

 

[howarmat]

spare parts and battery left will give you better info

 

[dantheman7]

Thanks to you both! Spare Parts has some other cool features, and I like Battery Left's customization.