Gently remove the blue rubber cover that surrounds the ES12 . It’s a little tight, but it’s for protection. Then you’ll see a door to open where you will inset a New low cost battery. I only changed mine once in 2 mo. Of using.
Gently remove the blue rubber cover that surrounds the ES12 . It’s a little tight, but it’s for protection. Then you’ll see a door to open where you will inset a New low cost battery. I only changed mine once in 2 mo. Of using.