Battery Replaceability Later On?

I like the idea of battery-powered cameras while fully understanding their limitations and deficiencies versus wired ones. (Yes, I know they suck at waking up and capturing footage in time.) But I plan placing these facing areas that don't get much attention usually (i.e., rear of the house), where I'm really just wanting a camera of some sort watching to catch motion.

Does anyone know if these batteries are replaceable in any way? My greatest concern is that these new battery cameras have their fates sealed to the health of the embedded batteries within. All batteries degrade and (eventually) die, especially when exposed to extreme temps outside, so I'm not exactly keen on buying these if Google hasn't mentioned anything about battery replacements in the future.

Anyone know?

(I know I could just have them be permanently wired if the batteries within degrade beyond usability, but I'd rather avoid that scenario.)