Why is my battery life draining fast?

[RearMisser]

I got a new battery for my Nexus 6p and it drains at the same rate my old one does. But sometimes it stops at a percentage for a good amount of time before it starts draining fast again. It never did this before with the old battery. How to fix?

 

[GSDer]

Did you ever use an app like AccuBattery https://play.google.com/store/apps/details?id=com.digibites.accubattery with your old battery to evaluate the health of the battery?
Have you tried doing that with the new battery?
Did you purchase a brand new battery from Huawei or some Knock-off on eBay?
Sorry, any/all of these things come into play when asking about battery life after a repair.

 

[RearMisser]

I did buy the battery from Amazon with really nice reviews. It was even recommended to me by them. https://www.amazon.com/gp/product/B...ag=hawk-future-20&ascsubtag=UUacUvbUpU6530840 And no I haven't used those apps.

 

[RearMisser]

And I have seen significant improvements in performance since I replaced it and it no longer randomly restarts on its own. Plus it discharges down to 0% and then shuts down like every device should. It doesn't discharge down to 20% and shuts down like it did before. It the first time in a while seeing the 15% warning on this device.

 

[mustang7757]

And I have seen significant improvements in performance since I replaced it and it no longer randomly restarts on its own. Plus it discharges down to 0% and then shuts down like every device should. It doesn't discharge down to 20% and shuts down like it did before. It the first time in a while seeing the 15% warning on this device.

Something to look at was in news..
https://hothardware.com/news/google-huawei-pay-owners-defective-nexus-6p-phones-up-400