I have lithium ion batteries in my cell phones, laptops, portable chargers, and all sorts of devices. Sometimes I'll keep them off for a week or two and when I turn the device on, the charge may be lower but it's not significantly lower.
But drone batteries otoh... after 5 days DJI batteries, save for the Mini 2's batteries, discharge to 60%.
Are drone batteries more prone to puffing / swelling / whatever than other types of batteries?
Drone batteries are probably discharged at a much higher rate than cell phone or laptop batteries. Maybe they're higher amperage too? Maybe those two things together make drone batteries more prone to swelling?
Maybe when other batteries say that they're at 100% they're really at 60% and they never actually let you charge the battery up fully to 100%?
In any of these cases, what about the Mini 2's batteries? The ones I have don't self discharge to 60% after 5 days, and I haven't seen any swelling either, so what gives?