Comment by rythie

My points are about what it’s like current with removable batteries in cameras with current technology. Battery usage is dependant on usage to some extent. For casual use my cameras last weeks on a battery and even shooting all day e.g. in a studio, I would only get through one battery. Modern cameras also have usb-c charging and can be used whilst you do that, so that’s an option too, though less practical in my view. Yes, camera batteries are proprietary and it would be better if they weren’t, though they are generally the same across similar cameras from the manufacturer and the same in the successor cameras. Many mirrorless cameras are water resistant (with the right lenses) so the can be used in heavy rain, though not under water without a housing. Action cams like the GoPro 13 Black are waterproof with a removable battery.