It has been quite some time since I used rechargeable batteries, must be more than 20 years ago. Perhaps technology has improved as previously the rechargeable batteries work well for a certain period before they lose their efficiency and don't work anymore ie. don't charge properly or after charging the batteries don't last long. If the quality of rechargeable batteries (and charger) has improved I might try it but these days disposable batteries are cheap so I tend to favour them more, and it's just the choice of which one to select as there are few brands.

Will keep the rechargeable battery recommendation in mind though.