Importance of charger vs. internal cell protection

Tony W

Newly Enlightened
Joined
Nov 30, 2013
Messages
5
Another newbie question here (btw, awesome to learn from all you great resources of knowledge). Been reading about 18650's in general, and there seems to be quite the emphasis on having a good charger. But I'm wondering about all those other devices we use, like phones, power banks, etc.

People use all kinds of chargers, probably a lot of cheap ones, too. And after all, if you're charging off a usb port on your computer, there's no shutoff circuit there, is there? So all these consumer devices pretty much have to rely on internal shutoff protection, correct?

So if you're using protected cells for your flashlight, why not just charge them with your phone charger or computer? I'm thinking about all those power banks that are really popular, that are just basically an 18650 cell in a case. I'm guessing the protection circuit they use is pretty much like what's in a protected cell anyway. Am I missing something?
 
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