I now find our 505's sometimes, but not always, charging with non-PC USB chargers. Very strange. This is for two 505's purchased at different times.
Sometimes when I plug them in they 'think' they're connected (USB connection symbol on display) but instead of charging they rapidly discharge! It'll go from almost-charged to fully empty (with alert-exclamation symbol on display) overnight.
I am extra-careful to fully insert the charging port so I am mystified as to our random difficulties. Other times I get a perfect charge from the same charging device! The only consistent behavior, I think, is the red LED on the reader lights up shortly after connecting if it is charging correctly. If it stays off then I always get a discharge instead.
I observed this incorrect charging behavior from three non-PC mini-USB-output chargers. And two 505's. Seems unlikely to be the same thing 'broken' on two 505's. More likely a voltage detection routine that is timed incorrectly on the reader versus several chargers, no? The PC connection is batting 1000, always charges (crosses fingers)!
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