About a month or so ago, battery started draining rapidly for no apparent reason, keeps getting worse. I have already deleted all unnecessarily apps, rebooted, wiped cache partition, am running night mode, shortest screen timeout, using original charger, everything I can find to do. Chrome and digital secure seem to be worst offenders, so I have auto privacy and web scanning disabled, system says not to disable chrome. Nothing is making any difference, what else can I do?