Although I haven't used it even once, I have taken it out of the box. I put in new AAA batteries on January 7th, so I think it should last for a while. My husband bought it in the second half of 2024, but we found that the existing scale was still usable, so I never used it and it was left in the closet. Please understand that this item has been stored at home before purchasing. ※The warranty period has expired.