Rechargeable devices for – 3.7 V, batteries -?

Hello, I am looking for rechargeable devices for 3.7 V, 500 mAh and 3.7 V, 1200 mAh batteries I tried Googling but didn't get a good overview. I don't know anything about it either, so I don't know if there are any general devices that charge a lot of different types of batteries, including this…

What's the difference between brand-name and no-name AA batteries? Can any battery be recharged with a charger?

I'm curious to know the difference between standard AA batteries. Do expensive ones last longer, meaning they have more power? The packaging only says that they all have 1.5V. Can all AA batteries be recharged with a suitable charger? If not, how do you know which batteries are rechargeable and which aren't? (e.g., if you…