I find that the battery life seems fine, but I haven't tracked it closely.
I have noticed a difference between Duracell coin cells purchased at Costco and Amazon Basics coin cells. The Amazon Basics ones didn't last long at all, the Duracells seem much better.
The newer dimmers (STYRBAR) use AAA cells instead of coin cells, so I'd expect them to last a lot longer.
>Related, Panasonic's rechargable eneloop have worked very well for me
Just a heads up: IKEA's brand of rechargables are likely rebadged eneloops at about half the price, also made in japan. Though for the AAA's they only have eneloop regular equivalents not eneloop pros.
I have noticed a difference between Duracell coin cells purchased at Costco and Amazon Basics coin cells. The Amazon Basics ones didn't last long at all, the Duracells seem much better.
The newer dimmers (STYRBAR) use AAA cells instead of coin cells, so I'd expect them to last a lot longer.