@Marinus-van-Deudekom said in Quadlock wireless induction charger.:
The quadlock can't keep up with the power consumption of the MRA app.
Temporarily (and for the benefit of other users who want to know!) you could try running the app in dark mode.
With AMOLED/OLED* screens like your Samsung S20FE and more recent iPhones (X onwards) you can save energy** since the black pixels use no power.
The other thing to try is to decrease the screen refresh rate from the 120Hz(?) default to 60Hz or 90Hz which also decrases energy consumption. It will be a choice somewhere in the phone settings, but I think it's a system-wide choice not not per-app, unfortunately. My gut feel is that the savings are much less than dark mode, but there might be another few percent or so to gain.
*(this doesn't help on cheaper LCD-based screens where the black pixels are blocking the light rather than turning power off)
**https://www.purdue.edu/newsroom/releases/2021/Q3/dark-mode-may-not-save-your-phones-battery-life-as-much-as-you-think,-but-there-are-a-few-silver-linings.html
"The Purdue study found that switching from light mode to dark mode at 100% brightness saves an average of 39%-47% battery power."
On a bike in daylight you can expect the phone to being running quite bright since you're not indoors, but whether you get enough saving, who knows. Please tell us!