Rayovac Extra Advanced Mercury Free Hearing Aid Batteries Size 312 + Battery Holder Keychain Kit (40 Batteries)

I have been using hearing aid batteries for a while. These were priced well. Since I never bought rayovC before. Thought I would give it a try. They last about 7 days which is longer than energizer or Duracell. Go figue

The battery package arrived in excellent condition from the vendor. The batteries, so far, are fresh and well packaged with insulating tape over each positive terminal. The keychain holder is very convenient as the hearing aid I use would play the first few bars of Beethoven's Fifth to indicate the battery is dying and needs replacement. I make sure I keep the holder supplied with batteries at all times. By the way, the holder holds two batteries, about two week's of power time. I have received enough batteries for about six month's operation. So in a couple of months I will reorder another supply.

I wish there was less packaging, there are 4 batteries per package. There would be less landfill waste if there were at least 8-10 batteries per package.

Clever packaging, easy to access, like the portable holder

hearing aid

thanks for the fast shipping, these batteries work very well

I only wish they came in larger quantities. That's a lot of packaging for only 4 batteries.

Great deal