These Sony hearing aid batteries are replacement batteries for size 13 hearing aid batteries. These hearing aid batteries are 1.45 volts. There are 60 batteries total per box and they have a 3 year shelf life, but when activated (tab is removed) shelf life becomes much shorter.
So far so good. Pleased with the ease of shipping, very pleased with the price. Time will tell how the batteries hold up.
Made in Germany, which I think is a plus.
Product was as advertised, service wa good, shipping was as advertised.
I go through about (2) 60 packs of these Renata size 312 hearing aid batteries about once per year. I've not been disappointment. That's why my most recent order is my third.
Since I have had my hearing aids I have been spending at least 16. dollars or more each month .Now since I have found out about Battery Mart(thanks to my husband) I am saving money and don't have to go and buy batteries every month. The service was amazing and quick,I got the hearing aids batteries in 2 day which was a surprise and they will last me for at least 180 days. Thank you so much for safing not only money but my time as well
This is my second order of the size 13 Renata batteries. I find them to be comparable to other name brand batteries with equivalent life of use.