calvingloster:
cjdelphi:
Your circuit can supply up to 125ma ... but will consume only 20ma (up to 125ma) if you shorted the outputs 125ma is the max current you'll get.Awesome ok thanx that clears a lot up for me! So even if I use a 100v power supply and limit current to my battery, my battery will not necessarily see 100v?
Correct, in constant current charging the charger manipulates the voltage to whatever is required to maintain that current value. in constant voltage mode is where the charger must not apply higher then 4.2 vdc.