I an using official Radon kernel v6.3 for nougat.. Please use that and report.. I have no issues like that.. Also battery life and performance are much better in this kernel.. If possible use battery profile while installing Radon kernel..
Yes, it's true. Doesn't exactly die at 39%. I started using from 78% and mine died at 16%.
Yeah, I'm not using the original battery. It swelled up and I had to change it. However, this problem was fixed after flashing Radon kernel.i think is battery issue, mine is over 2 years and im facing the problem even on xiaomi europe kenzo rom(based on official rom), it shuts down around 16%. (indeed, with a custom kernel on los14.1 ive never had the problem - franco kernel)
I've been using this rom with Radon Kernel for a while now. It's arguably the best Nougat Rom for RN3 right now.
Although there are a few bugs I should mention-
1. Network connectivity is weak on this rom. My wifi and data signals keep dropping and connecting which I didn't experience in the Global Stable Miui Rom. (Maybe the modem needs to be fixed)
2. DND mode activates itself everytime I call someone and closes after ending the call.
3. After transferring files via ShareIt, Bluetooth can't be turned off without restarting the phone. Everytime I deactivate it, it turns back on itself.
Everything else in this rom is perfect. It's fast and smooth. Not to mention that I'm getting around 7 hours SOT with this rom. I'll keep using this rom if the developer pushes security updates regularly.