Bests & Worsts Reviews from Amazon

Over several years I have used a number of different name brand and generic cell phone batteries including Energizer...and they all drove me nuts with their short life, loss of contact, difficulty in getting the hearing aids going etc...I usually blamed my problem on my hearing aids (which btw are top line, behind the ear Phonaks. If I got 4-5 days out of a set of batteries I was happy...well some months ago I was on vacation and the only 312 batteries readily available were Duracell...now I put in my batteries, close the tab and I am trouble free for a full 7+ days...roughly turned on 6:30 am to 10:30 pm daily...16 hours. I bought the current batteries from Amazon since they were Duracell and since they were in bulk but divided into handy retail 6 battery packs. If this sounds like an endorsement for Duracell, so be it because nothing else I have tried even comes close!!