A tremendous price for quality batteries! I have had a pair of hearing aids now for almost 4 years. These Power One batteries are the best value I have found. I get 7 - 8 days from a single battery. That number is SO dependent on just how much amplification is needed, the actual amount of time the device is on and (I suspect) the efficiency of the device! Another positive for me is that these ARE NOT made in China! They are made in West Germany.

I am a practicing audiologist, and I routinely recommend this brand of hearing aid batteries to my patients. At roughly $0.25 a battery, they are listed on Amazon at a very competitive price - which is an important factor with respect to how expensive hearing aids can be.

I find that hearing aid users experience longer battery life overall with PowerOne.

A few thoughts in terms of hearing aid batteries: Size 312 Zinc Air batteries generally last approximately 5-10 days. Factors that contribute to varying battery life include length of daily use, the brand of hearing aid, how much amplification the hearing aid is delivering, and whether or not the hearing aid user is streaming wirelessly through Bluetooth compatible accessories. I also recently read a study that showed that the longer you wait after pulling the battery off the tab before putting the battery in the hearing aid, the longer the battery will last. Waiting 4-5 minutes before putting the battery in the aid appeared to fully optimize battery life.

Lastly, definitely check the expiration dates on the back of the packages! They generally come with a very long shelf life - The packs that I just ordered expire 4 years from now. If they don't have an appropriate expiration date like advertised, send them back.

These are decent batteries but made better because of their price. I get 60 for about $20. If I get 2 at the local store, they cost about $18 so this is really a bargain. My hearing aids have a built in transmitter receiver so they eat batteries quite frequently (1 every 2-1/2 days) and I found these batteries are comparable to the ones I used to get from my ENT. The difference is - they are about 1/3 of the price.

Long lasting, well priced. I have used 2 packets (12 batteries) and these last as long as the more expensive ones. These are fresh batteries, not some that sit in a warehouse for who knows how long.

Great batteries. Will buy again in a few months when they run out.

I have purchased these for the past several years and they seem to outperform the more expensive ones. They are made in Germany and I'm guessing the technology is better there, but I usually get three days use out of them and my hearing aids are about 5 years old.