[rchusid]

I was also recently having the problem with the Boyue T62 that the battery would run out in a few days, with a battery monitor app I installed showing the use was almost entirely screen. It is now working fine, like when I first got the reader.

I made a few changes last weekend so I cannot say for certain which is responsible for the improved battery life. I made the changes last Sunday and barely turned it on for the first few days and it stayed at 100%. Since then I have only used it for brief periods and it remains at 85% six days later. I left it with WiFi on during this period but apps were Greenified so it was not wasting power for tasks working in the background.

Here are the three things I did last Sunday. Note 2 and 3 required a rooted phone.

1) I did at least the third system update in the last month or so. Hopefully this means that they fixed the problem in the last system update, and I suspect this was the most important factor.

2) Initially when I got this (and had good battery life) I just installed SetCPU and left it at the setting it showed on installation--Max of 1008 and Min of 504. On Sunday I reset the minimum down to 312. This might be playing some role but considering how rapidly the battery was dying the previous couple of weeks I doubt that this alone would add this much to the battery life.

3) I got more aggressive with Greenify. I initially installed just the app and Greenified most of the apps I could. Last week I added the Xposed module to activate the experimental features, and added system apps to the apps Greenified. I doubt this is playing a role as the previous week the battery was dying with WiFi turned off and the battery monitor not showing any significant use of apps. My main thought was this might help a bit further, as I prefer to keep WiFi on so it will automatically sync the page position (Using Moon+ Reader and Dropbox) whenever the reader is turned on. This way Google Play is Greenified and won't try to update apps except when I want it to.

UPDATE: This all worked well for a while. Now suddenly it has resumed using up the battery very rapidly, with a battery monitor app generally showing the screen as using almost all the power.