Explainable terrible battery life on Note 8. Anyone know why?

[ptheguy]

So about a month ago, I used to get about 40hrs of battery life with a single charge. Also, the overnight drain was about 3-5%. This was great and normal.
Suddenly, it's been a month since my phone drains like crazy. 20-25% overnight drain, and an always steep slope down battery plot. In fact, the plot indicates no flat regions. I'm sure it is not a third party application that's draining my battery, as the issue persists even right after a full factory reset.
I have attached two figures, one for the battery and for from the Naptime application that shows the doze times and supposedly blocks wake-locks. Still, huge drain. These figures are taken 9 hours after a fresh factory reset, with nothing new installed on the phone expect Naptime.
I've looked so many places and tried many different things. Can someone help me understand what's going on? I'm running N950U1EUE3BRA5 firmware if that makes any difference.

 

[gooberdude]

So about a month ago, I used to get about 40hrs of battery life with a single charge. Also, the overnight drain was about 3-5%. This was great and normal.
Suddenly, it's been a month since my phone drains like crazy. 20-25% overnight drain, and an always steep slope down battery plot. In fact, the plot indicates no flat regions. I'm sure it is not a third party application that's draining my battery, as the issue persists even right after a full factory reset.
I have attached two figures, one for the battery and for from the Naptime application that shows the doze times and supposedly blocks wake-locks. Still, huge drain. These figures are taken 9 hours after a fresh factory reset, with nothing new installed on the phone expect Naptime.
I've looked so many places and tried many different things. Can someone help me understand what's going on? I'm running N950U1EUE3BRA5 firmware if that makes any difference.

Well since introduced out tablets have had to do power resets time to time to clear battery data. It's been an ongoing issue since Kit Kat upgrades from JB.

Since your device is 3 years old now, i assume the battery is bad. Very few have their original battery. I suggest checking on ebay, or dispute the transaction in that the item is not as described. Does not hold charge. You should get your money back. PS your 3 year old Note 8.0 should only be $50 at most. I got my new AT &T version new back when for $150 no contract no service, and my wifi variant for the same $150 US shipped about 6 months after release.

 

[ptheguy]

Since your device is 3 years old now, i assume the battery is bad. Very few have their original battery.

I bought my phone last month, it's 1 month old!

 

[nvlicious]

Dude, look around before posting. This is the 2nd time i see people posted on wrong device