Let me start by saying these Duracell batteries saved my dog's invisible fence collar from the overpriced 'Power Cap' monopoly. I’ve been hacking open those caps for two years, popping these in instead—same voltage, same performance, way cheaper. A hobby knife and a dab of super glue later, and voilà! (Yes, there are Instructables if you’re nervous.)

But here’s the catch: while they fit perfectly in my laser sight, their shelf life is oddly short. I installed fresh ones, didn’t even use them, and months later? The laser was a dim ghost. Not ideal for emergencies—like spotting an intruder at 2 AM.

On the upside, they work flawlessly in my Garmin power pedals (yes, DL1/3N = CR1/3N—confirmed!). Delivery was fast, and they arrived fully charged. But at this price? I wish they lasted longer between replacements.

Verdict: Great for DIY hacks and niche gadgets, but don’t expect miracles if you need long-term reliability.