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Old Feb 15, 2012, 04:30 AM
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Warsaw, Poland
Joined Mar 2009
68 Posts
Actually it's a single resistor from PROG to GND (Vss, pin2), I(bat) = Vprog/Rprog*1000, Vprog=1.03V@Rprog=10k. So 10k resistor should give a nice and relaxing 100mA charge current well below 1C. I'm afraid long recording with external 5V supplied through standard USB cable will be impossible as the circuit draws more.
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Last edited by crazy4volvo; Feb 15, 2012 at 04:41 AM.