Less than 1 hour SOT - Xiaomi Redmi Note 3 Questions & Answers

Hi
So about a month ago I went from AOSP Extended 8.1 to MIUI 9.5 just to get a feel of the skin and to have better battery compared to the poor battery management of 8.1. At that time I used to get 4-5 hours SOT. Not too shabby.
After switching to MIUI I observed that I got manageable battery life but didn't like the overall look of the ROM. So I then reverted to 8.1 using Nitrogen OS. The issue started here, with even worse SOT than before and 40-50 % drain overnight. I didn't want to charge more than once everyday and decided to move to 7.1.2 as I was aware that Nougat had the best of both worlds, with much better battery and it being stock. Looked up LineageOS 14.1. Saw it was a pretty old build but I didn't think much of it and flashed it. The moment it booted up and I tried to install a couple of apps, the 70% battery went to 0 and the phone shut down. It happened a couple more times and I concluded it was an issue with the ROM. I then downloaded AOSP Extended v4.6 (7.1.2), the unofficial build from the comments and to my dismay, the battery issue has worsened. Now I'm getting less than 2.5 hours of standby, <1 hr of SOT, and the percentages are dropping by the minute! I go to bed with 50-60% charge and wake up to a switched off phone with 0% left.
Is this the complete end of the battery? Do I have to change the battery or can this be solved via alternate ROMs or kernels?
Any help is appreciated.
Thanks and Regards

Smells like a badly degraded battery

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Tried cm13 Rom, now back on cm 12.1 with 75% worse battery life

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How do I recalibrate the battery? My battery goes to 1% in 2 hours and then sits at 1% for ťhe rest of the day. Battery life is normal but I have no idea how much I have left.
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Weird battery stats

Hi,
My phone battery is behaving abnormally since few days. The phone goes off at around 40% battery showing a low battery warning. It does not switch on unless I put it on charge and switch it on. After switching it on it shows random battery percentage like 23% or 71% etc. The battery is also discharging fast these days.
My OS is Miui 8.5.7.0 updated 2 or 3 weeks ago.
hayabusa_ryu said:
Hi,
My phone battery is behaving abnormally since few days. The phone goes off at around 40% battery showing a low battery warning. It does not switch on unless I put it on charge and switch it on. After switching it on it shows random battery percentage like 23% or 71% etc. The battery is also discharging fast these days.
My OS is Miui 8.5.7.0 updated 2 or 3 weeks ago.
Click to expand...
Click to collapse
This could be due to faulty or a degraded battery
I have had also faced this problem on my previous devices and that was bcs of degraded battery over time
Can u tell me what's ur device age and also to make sure it's a faulty battery or something u should first take backup of everything and then clean Flash miui using Mi Flash tool
Thank you for replying. My phone is of 1 year old. I can bacup & clean flash but I have too many important things on my phone that I do not have time or I can't take risk of missing something. If I have no options then I can flash. The battery quality of Redmi is very poor, my nexus tab is running fine even after using it for 4 years and doing more recharge cycles.

Question Wonder issue

Hi guys , I have bought this phone for about a week, the problem is that when the battery percentage is 14 to 11, it drains within 30 seconds and then the consumption is normal, I sent it to the dealer for that. They installed the latest version of miui. This was useless and the problem is still there, does anyone have this problem? Or if there is a solution for it, I also did the calibration.
I dont really understand what you are saying, i usually charge my phone whenever it is at 20% or something but there have been instances where it dropped to 5% too but I never noticed it specifically from 14 to 11
I have been using it for about a year now, so far things are good at my end and in general i am satisfied with battery life and charging speeds.
If your phone charges up fast, and overall battery performance is good with 5-6 hours SOT until you reach 20% i think it's good
I have the exact same issue on my Poco X3 GT. When the battery reaches 14% it drops very fast to 11% and then everything goes normal again.

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