Let's talk about the Rayovac Size 312 hearing aid batteries. I've been using these for a while now, and my experience has been a rollercoaster. On one hand, when they work, they're fantastic—lasting up to 6 days with heavy use, including Bluetooth streaming for audiobooks. That’s impressive compared to other brands that barely last a day.

But here’s the catch: consistency is an issue. I’ve had batches where batteries died within hours or even seconds. It’s frustrating, especially when you think your hearing aids are broken (cue expensive audiologist visits). Rayovac’s customer service is solid though—they refunded me for a bad batch without hassle.

The child-resistant packaging is a double-edged sword. It’s great for safety but can be annoyingly hard to open. Pro tip: use scissors over a table, like slicing a pie. And yes, buying in bulk saves money ($7.99 for a single pack locally? No thanks).

Bottom line: When these batteries are good, they’re *really* good—long-lasting and made in the USA. But the occasional dud batch makes me hesitant to fully endorse them. If you gamble and win, you’ll love them; if not, well… at least their customer service has your back.