I'm doing a hobby project where I'm designing a smart RC car around the size of a mini sim card. The BOM has been narrowed down, and I reckon it's doable with a 4-layer board.
Image source: https://www.gsmarena.com/glossary.php3?term=sim
I'm now doing research on possible batteries to use. I'm eyeing the Panasonic CG-320 (15 mAh rated) or this 70mAh LiPo battery. Both are well within my size targets, but I'm unable to find any datasheets that specify a maximum discharge current.
For reference, my power budget is less than 5mA when sitting idly, less than 100mA when running around, and 300mA worst case (e.g. in case of motor stall).
Are there any rules of thumb regarding discharge? Based on what I've read, a maximum current of 0.75C for charging is ideal, but I'm unable to find any figures for the other way around.