This is not a valid issue, and it's not a bug. Also, the poster didn't read the help/man at all, since to see other device batteries listed, you have to use -Bx, not -B alone. -B alone only shows results for laptop batteries, basically. If -Bx does not show the cmos battery, then inxi can't find it, the data is not anywhere it can locate. If -Bx shows the device battery then obviously the issue is completely invalid in the first place, and if it doesn't, it means inxi has no access to it, which means the issue is invalid. /proc is not used to get battery data, that comes from /sys.
This is not a valid issue, and it's not a bug. Also, the poster didn't read the help/man at all, since to see other device batteries listed, you have to use -Bx, not -B alone. -B alone only shows results for laptop batteries, basically. If -Bx does not show the cmos battery, then inxi can't find it, the data is not anywhere it can locate. If -Bx shows the device battery then obviously the issue is completely invalid in the first place, and if it doesn't, it means inxi has no access to it, which means the issue is invalid. /proc is not used to get battery data, that comes from /sys.