We have been using these batteries for 6 years. They provide power much longer than the store-brand batteries from that big-box store. They always have at least a 2-year shelf life. This order is for 10 cards of 6 batteries each, or 60 batteries total. They are Zinc-Air cells, meaning they are activated when the seals are removed and they are exposed to air. Made in Germany. These are the same batteries you buy from hearing aid dealers for $3-5 a card, while these we paid less than $1.50 per card in this package. What a deal!!!
https://www.amazon.com/gp/product/B001FNW09U #Batteries #Zinc-Air #PowerOne #Review