I have the same problem for one of my three IKEA Parasoll. The one indoor. The other two are mounted outdoor (water-protected but in the cold).
I use IKEA rechargable LADDA batteries, not the latest series. The all white labeled ones. They are just a few years old and by no means “worn out” (have a very nice charger that tells me how much mWh it did put in to them.)
I also have an IKEA Dirigera hub just to be able to firmware upgrade IKEA zigbee stuff. Its easy to move the to the IKEA hub and just “repair” them back to my Homey Pro 2023. All my Parasoll was on the latest firmware already.
