Yeah, my audiologists tell me there are some people (mostly the elderly) who still want disposable batteries, but the mfrs are mostly changing over to wireless recharging, so full-featured models with disposable batteries are getting very hard to find. I'm in the process of replacing mine, and I will be absolutely thrilled not to have to deal with disposable batteries. (For whatever reason, I've always had issues with the batteries in my aids holding a charge; generally if I use them all day, (leaving the hinges open at night to break the power draw) they almost always die a few minutes after I put them in the morning. Happens with every brand and model I've ever had.)
The thing about hearing aids is that, just as a general rule, if you are retired you have a wider choice of price ranges and styles, and can skip a lot of features if your living situation doesn't require them. If you're still working full-time in an office envirornment and need features compatible with that, you're going to be needing to veer toward the higher end. Those are designed more to appeal to younger people, which tends to mean smaller size and rechargeable-only.
The most common size now is a behind-the ear that is about 1/3" by 1", with a small clear wire and bell that curls down into your ear. Audiologists tell me that as the size of most aids gets smaller, older users have more issues with changing out batteries because of the manual dexterity required.
I've worn aids for 20 years, and I'll still be working full-time for at least 8 more, so I need aids that have every bell & whistle available, and as we use more and more technology in the workplace, aids need to keep up; now I need aids that I don't have to take out to make a zoom call or answer the phone on different devices, that won't generate feedback in close proximity to a whole slew of electronics, that won't put me to sleep by greatly magnifying the sound of the overhead A/C vent, and that won't drown out other noises if I speak or chew when I have them in. (Without vibration sensitivity adjustment, attending a lunch meeting is the nightmare from hell, because if you're eating you cannot hear anything above the sound of your own chewing.)