Okay, so I've been using these Granicell AA rechargeables for about a month now, and here's the real tea ☕
First off - that 2800mAh capacity? LEGIT. My Xbox controller lasted through an entire weekend gaming marathon without needing a recharge. My previous batteries would've died halfway through Saturday night.
The low self-discharge thing is no joke either. Found an old remote I hadn't used in weeks - popped these bad boys in and they still had like 90% charge. Meanwhile my old rechargeables would be completely dead after two weeks in storage.
Pro tip: They do run at 1.2V instead of 1.5V like alkalines. Some super sensitive devices might notice (my digital thermometer was being weird), but for 95% of stuff? Perfectly fine.
Eco-warrior bonus points: Came in minimal packaging, no plastic nonsense. Though I wish they included a storage case - I'm using an old mint tin like some kind of battery hobo.
Final verdict? If you're tired of constantly buying disposables and want batteries that actually last, these are totally worth it. Just don't expect them to work miracles in super high-drain devices - they're good, but not magic.