Alright, so I finally got my hands on these KAMCY AA batteries after seeing mixed reviews online. Here's my real-deal experience after using them in different gadgets around the house.

First off, the longevity is no joke! I popped these into my gaming controllers and they lasted way longer than some no-name brands I've tried before. Even in my kid's noisy toys (you know, the ones that never seem to turn off), they held up surprisingly well.

The leakproof claim gets a thumbs up from me. I've had bad experiences with other batteries ruining my devices, but these have been solid so far - no weird corrosion or leaks even after months in my emergency flashlight.

Price-wise? Absolute steal compared to those premium brands. Are they Duracell-level? Maybe not, but for everyday stuff like remotes, clocks, and wireless mice, they're more than enough. Saved me a bunch without feeling like I compromised on quality.

One thing though - don't expect miracles in super high-drain devices. My digital camera ate through them faster than I'd like, but for most household items? Perfectly happy with the performance.

Final verdict: If you go through batteries like candy (hello, parents!), this bulk pack is totally worth it. Just maybe keep some premium ones for your most important devices.