A user-friendly, compact device to help you stay updated if your current stock of hearing aid batteries has enough charge left.
Comes with a mini compartment to place a spare hearing aid battery (with sticker intact!)
✅ Made for all sizes — can test 10, 312, 13, and 675 batteries. HOW TO USE — Place the battery (positive mark facing up) on the test surface. — Slide the battery in the direction of the arrow. — The display will tell you how much power the battery has left in it.
WHEN TO USE Depending on the size and frequency of usage, one hearing aid battery can last up to 3-14 days. When in doubt how much power is left after days of usage, this mini device can be handy!
