Rayovac Mercury-Free Xcell Size 13 Hearing Aid Batteries - 60 Pack | Long-Lasting Zinc-Air Power for Clear Hearing | Perfect for Travel, Work & Daily Use

The great quantity receive. Easy of ordering and never have to go to the hearing dealer every 2 months for batteries. Save time and never out of batteries. They last a week.What key chain??? No matter, these batteries work better than the last ones I purchased. Last longer.I am very happy with my Rayovac Batteries for my Hearing Aids. These were recommended when I purchased my hearing aids and was suggested I get them online from Amazon.They usually are good for a week unless I listen to a lot of music or video's which I do not do very often.So easy to order and get in a a couple of days. Harder for me to find this style in the stores.We have purchased these particular batteries for our hearing aids for probably the last year or so. They are reasonably priced and work very well.Simple and easy way to purchase.Even though they were marked "Use BY July 2020" about 15% had very short life. One lasted only 1 hour. 6 to 8 days for the majority.Interesting that Amazon shows the six pack of Energizer 371/370 battery for this review request. That is exactly what I thought I ordered, but I received a single battery priced very close to the price of the six pack that I ordered. I felt gyped, but just assumed that I had made a mistake. Oh well, it'll take more than that to make me mad.Some of the batteries did not work for more than a day or two. Others worked for a week.使用上全く問題ありません。やすく手に入れられて良かったです。