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Does anyone know the input amperage for the Micro power input. I know its 5V USB cable but I am not sure the max amperage as it doesn't say on the box, the instructions or anywhere else I can find. I would like to charge while play instead of using 2 ports on my computer or alternating between charging and playing.
Can you always be charging (i.e. does it have a "trickle charge mode to prevent over charging) such that I can do what I am thinking of?
With product from large manufacturers like Sony, you don't need to worry about that.
Charging control chip are about a dollar a dozen, and no manufacturer world risk battery exploding to save the cost of the chip.
To answer the trickle charging part, the amp can draw up to 1.5 amps when connected to a dedicated charger out USB per bank, and only 0.5 amps when hooked up to a PC. As it charge up, the current slowly roll off, and when it is almost full, it becomes very very low current.
To answer the always charging part, if you are eager to pay for a replacement battery in 1 to 2 years, then keep it plugged in all the time. Lithium ion/polymer are kinda like balloons, you can pump it up really big, but keeping it pumped 100%will slowly damage it. It is best keeping your lithium battery charged to 70%if you plan to keep it there for a while.