PowerOne Size 312 Hearing Aid Batteries - 50 x 6 Packs = 300 pcs.

PowerOne last the longest for me. I am using Phonak hearing aids in bi-cross modewith a bluethooth controller linked to phone, computer, or TV. I have moderate to severe hearing loss which means I need more than average amplification.(In other words I am pulling a lot of current from these batteries.)PowerOne last on average 30%-40% longer than most other brands I have tested.Add the nice price discount, as well as longer battery life, these are the best batteries I have found so far.Everything received as shown in the picture. Also large box was sealed and everything was new and unopened.

I wear my bluetooth hearing aids 24/7 because of the tinnitus feature. I also listen to music and make 100% of my phone calls over the bluetoooth in my hearing aides. I purchased this pack of 300 batteries on April 5th, 2020. That was 14.5 months ago and I have 30 batteries left. That means I'm averaging 18 batteries per month. I paid $74 total, which means I spend $4.60 USD per month for 24/7 battery usage. These batteries last about 3-days. The grocery store commercial batteries last about 3.5 days, but they are much more expensive. I *highly* recommend them. It's also nice to never run out of batteries.

Worst 312 batteries I’ve ever bought from Amazon in the past 5 years. Packages are not easy open, they require scissors and a lot of work just to open. So if you have some for emergency in your car or wallet you better have scissors. I usually get 3-4 days per battery. I’m lucky to get 2 days with these. They are not worth the cheap price I paid. Lesson learned

The batteries do the job they’re meant to do. Much cheaper than CVS or from the hearing aid company.

I've used this brand of hearing aid batteries for years with no problems, but I just got a batch with their new childproof packaging, and I think I'll definitely be looking for a new brand from here on out if it's not changed back to the old packaging! It's impossible to get into without completely destroying it, and I've still only managed to get one single battery out, so I'm pretty much out of luck once the batteries currently in my hearing aids die! And forget carrying a pack in my purse, I guess!

Excellent product and price. I was using a box purchased from my audiologist at 3X the price. High quality product.

These are the same exact brand of hearing aid batteries that my audiologist provides at a far cheaper price with the same performance. The expiration date allows you to easily buy a year's stash. I love the convenience of having them on hand. It makes life a little easier.

Good quality long shipping time .