Where can I buy batteries for these?

[Beard-O]

Mini moisture meters. I have a bunch, half of which are brand new still in the box. All with dead batteries.

[Lightbrightt2010]

Amazon

[Need_4_Seed]

Just be glad you didnt buy a pack some idiots drilled a mini screw that can’t be removed. Its been stripped and stuck in there. The whole box i got has them.

Ironically, the hygrometers are nearly the same price as a pack of batteries. So, no real loss either way.