Originally Posted by
billdelong
You are limited to the power that is available, for example if the charger is rated for 1000W but your supply can only provide 750W then you will only get around 600W of output due to inefficiencies which are variables due to heat, wire length, connector quality etc...
No, the power supply will shut down if you ask more of it than it is rated, no way it will limit the current.
.
The charger itself can handle a certain amount of current on the input, probably around 30~35A and will limit it when you want to go over it.
Lets say the limit is 30A then when using a 12v power supply the power limit is 360w, because there are losses the charging power can be around 300~320w