Using two 18650 batteries with a capacity of 3500mAh is not enough for me, given that I spend a lot of time outdoors.
Secure the magnet inside using 3M adhesive.
The best power banks are ~110mm x ~60mm x ~10mm, but I only found ones that were 102mm x 66mm x 8mm and weighed 100 grams.
How do you manage the thermals then?
The magnetic ring with the notch is for the CPU thermal paste to make contact with the aluminum casing. I’m using it at an average temperature of 45°C. This device is designed to run well at around 60°C, and I also don’t want to waste battery on a cooling fan. Besides, slightly warm hands are good for health.
