Same here! Did you find a solution? The battery drains switched on too quickly.
I followed all steps in the #batteryguide. After the Android bug “recommendations” the drain got a little better, but not the heat.
EVEN when the FP is switched OFF and charging, the CPU get pretty hot (when swiching on, checked at AccuBattery and it says 44 Celsius!
The battery is not even 6 months old and it doesn’t last a day…
The FP CPU gets hot also just watching 1 video for a few minutes.