Quote:
Originally Posted by HarryT
It's the device which "decides" how much current to draw; the amperage rating of the charger merely designates how much current it's capable of supplying. I would imagine that the vast majority of devices would require more than 0.2A; a standard USB port can supply up to 500mA @5V.
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Yes, but without negotiation and USB port will give 100 mA.
But see the question instead as: Is it better to trickle charge or better to use a proper charger that charge fast?
I would think that it does not matter. What matter is that you do not discharge the batteries fully.