would anybody else be interested in an 18650 battery case for the #pinephone / #pinephonepro? i did the math, you could fit at least 6, probably 8 cells on the back without covering the cameras. 3500mah cells * 9 (including internal) would get you over 30000mah, or about 100wh with a standard 3.7V cell. that's several days of screen on time.

sure, it might be a bit chunky, but i think it'd be awesome. theoretically it could charge with the phone's builtin port too thanks to the pogo pins.