Good power usage programs?

[Grimgrak]

Somehow my power usage jumped from 85% to 35% in less than 2 hours and I just left it on with a pdf displayed, with no internet so I'm trying to find a way of monitoring power or an alarm to let me know once battery drainage drops too quickly... Any suggestions?

 

[Javier P]

You could try Gsam.

https://forums.androidcentral.com/e...ps/details?id=com.gsamlabs.bbm&token=J669ANBo