High refresh rate drains battery no matter how much battery there is. You don't really need 144hz just to scroll socmeds. Cap it to 60 and only use it for gaming.

Plenty of background apps drain battery. Turn some of them off.

Batteries will always degrade no matter what.

A replacement battery is only about 50 bucks off AliExpress.

Enjoy your phone.

It's not "unknown" why other brands aren't using... It's a newer technology, and it's much more energy dense, meaning it's heavier. By "other brands" I assume you mean apple and Samsung... Their demographics prefer lighter, slimmer units. They have established standing contracts with Li Ion manufacturers, and have built their phone infrastructure around those batteries. Apple and Samsung are ALWAYS behind the other brands with innovation, it's no surprise they haven't jumped yet. Apple literally had to risk losing the entire EU market before they switched to USB-C. These are companies that find change very costly, and try to avoid it as much as possible.

As for the rest - Battery apps are notoriously unreliable. Especially with split cell batteries, and with fast charging. If you want a better metrc, charge the phone with a VERY slow charger. Like a 10w or 15w. And you need to get under 15% for an accurate measurement, and you need to do it like 5-10 times.

Yes RM only offers 2yrs support. They pump out new phones every 6 months, at 50% the price of a flagship Apple or Samsung. Would you rather pay $1600 for a phone that will get nerfed after 4yrs but keep getting updates? Or pay $800 and upgrade every 2yrs, and not be locked into an ecosystem? I'll take the latter thanks

Was there a question in there?

Screen on time is only one metric. A lot of variables here in terms of workload, apps used, if gaming WHAT you were doing in those games (Different areas or activity in the same game will use different amounts of power), cell signal strength, screen brightness especially if set to automatic, etc etc... Along with the fact by default it's likely running battery optimization tasking based on typical usage. Unless you're comparing exact 1:1 usage under controlled testing environment, it's going to be impossible to compare using SoT alone...

Many, many battery 'health' apps are also notoriously inaccurate at measuring capacity, if you're going by that at all.

Running full 0-100% drain and recharge is in itself terrible for batteries, as about 15% should be the minimum you let it drain to unless you're dealing with something defective or extremely out of tolerance metrics. Also attempting to quantify daily sub-1mAh losses? That's...that's probably not gonna be healthy for your anxiety in the long run, unlike the battery.

Either your testing environment has other variables, or you got a straight up defective unit and should consider a replacement if it persists.

My 11 pro is GB variant. So there is no battery health feature. i don't have that anxiety 🤣

Haven't been checking mah on mine, but I am certainly not seeing any signs of battery degradation on mine after just over a month of using it, comfortably getting over a day out of it even with a high amount of screen on time and running it using the 144hz auto refresh rate.

Try to unable the 5g, when you havent good signal the cellphone loss a lot of battery trying to connect

Meanwhile I'm just running the thing at the highest resolution, refresh rate and power mode I can, I have the LEDs set to always on and I charge it every day and a half. I'm not worried about the battery going bad because it's going to happen eventually, I'll just replace it when it happens.

Honestly for me, I haven't felt like the so called extra battery capacity has really translated to more battery life.