My OPOs battery life

the last time my OPO isn't functioning as it should whenever i charge and use my phone at the same time (lowest brightness and no bluetooth) my phone loses percentages. Last night I left my phone in the charger finding it being 20% less then i put it in the charger. other times when i put my phone off in the charger it gains 10% per hour. I have not boot loaded, flashed or done any of that stuff my Rom COS is 12.1 and i have read that there are several others with this problem. also I have read that using another rom will solve this problem. when i tried flashing after installing the TWRP doesn't work and i can't get in recovery-mode.
Im pretty sad that my OPO is having these problems. does anyone has some suggestions on what to do?
Also i had various battery managers who said charging would only take 2 hours and in reality it took 24 h+.
thanks for reading

[Q] Widgets like OPO's Shelf, HTC's Blinkfeed etc.

Is there any possibility out there to make a custom Shelf page for, say Nova Launcher? Like put widgets in a vertical-scrolling page, making a custom Shelf/GoogleNow alike thing? Maybe a "scrollable widget-container" to put widgets in? If not, maybe I might just given you a million dollar idea (patented dont even try lol).
Anyone?