hi all:
the documents(SLUA406,SLUA511) tell me that if there are any external voltage sources, the charger present is set to 3500mV.
could you help to tell me what does "the external voltage sources" mean? why does it set 3500mV other than (3000-4000mV per cell)* number of cells when the external voltage sources exist?
if possible, taking a example could be better.
thank you.