This won't be a long review.
In short, these are nothing short of amazing. Rechargeable AAA batteries can be a bit hit and miss usually, but these are exceptional in any situation, even in high drain appliances.
Furthermore, they hold their charge exactly as described, which is great when you want to keep a spare pair of batteries on you for something like noise-cancelling headphones.
I highly recommend these if you need quality rechargeable batteries.