Non comfort access key fob-- is there anywhere that replaces the battery?

Bought the e91 used, PO never used one of the two remotes. :thumbdown



I know they supposedly aren't serviceable, but the same is said of the 46/39/38/53 remotes, yet there's places that replace the batteries in them. Is there anyone that does a similar service on the non comfort access e9X remotes?



Thanks!