Ok with the women’s complaints guy won’t use medical stuff like hearing aids and canes, first of all real men where taught you never complain, you do what you must and you never show weakness. This is ingrained in us from boyhood, and you expect change at after 50+years?
Solutution, you can get shooting and saftey elecronic ear plugs with sound enhancement, they turn off high impact noise (gun shot, tool noise) yet amplify ambient noise (speech). You get a set as a gift for them, (corn in the pig trap). They will use them as they are nearly invisible and they can hear better, amazing how they will wear just one àfter awhile and take it out when they just don’t want anymore inter action with people.
Please note the ones with amplification need batteries which is what you are looking for.
https://www.geekwrapped.com/guides/best-electronic-ear-plugs-for-shooting