Galaxy Tab 3 battery has erratic storage .

A

AC Question

Galaxy tab 3 battery will drain at approx. 2% per hour if in continual use.
If switched off completely then on again maybe 1 hour later, the battery will be down to 20%.
If fully charged and left completely off, the battery will still show about 40%/50%. three or four days later.
Have tried using "flight" mode and no WiFi but same results.
Pad only one month old.

Any thoughts??????
 

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