48-pack of size 10A batteries.

48-pack of size 13A batteries Rayovac Proline Advanced. Expiration date 2012.

You can test your batteries to be sure that they are spent before changing them. This is a great tool to help troubleshoot hearing aid problems. If you have ever replaced battery after battery only to find out that your hearing aid still doesn't work, this tester will be your best friend. You will pay for it in no time in battery savings. It is simple to use and accurate.

Rayovac Hearing Aid Battery Care Kit This kit is the answer to many hearing aid battery problems! Do you have trouble handling the small batteries that go in your hearing aids? Do your hearing aid batteries go out at incovenient times leaving you to struggle in social situations? What do you do when your hearing aid goes dead, you change your battery and your hearing aid still does not work? The Rayovac Hearing Aid Battery Care Kit helps with all of these problems. The kit includes a magnet pen to help in picking up the tiny batteries, a battery caddie to cary spare batteries on your key ring or purse and a battery tester. People who use these kits swear by them. They truely make things easier. You can test your batteries and be sure that they are dead before you discard them. You will never again throw away another good battery. The battery tester will help you trouble shoot your hearing aid!