Okay, let's talk about these Tenergy C batteries – the unsung heroes of my gadget drawer. I was skeptical at first (never heard of the brand), but needing 5 batteries for my ancient Brother label maker, I took the plunge. Spoiler: my label maker roared back to life like it's 1999!

The real test? These survived my chaotic household. From powering Christmas decorations in freezing temps to enduring my kid's Nerf gun marathons in summer heat (-4°F to 129°F range is no joke). No leaks, no drama – just consistent power.

Pro tip: Buy in bulk. At this price (12 for what stores charge for 2), I now keep them stocked for everything from flashlights to weird vintage electronics. One package had duds, but Amazon replaced it hassle-free. For disposable batteries? These punch way above their weight class.