[amluto]

I’m still amazed that companies build EVs that will fail in a way that requires service if they don’t like a charger. A friend’s early Audi e-Tron would fail and require extensive service if connected to a J1772 charger that advertised more current capacity than the car could handle. (That is really pathetic BTW. It seemed like the car’s onboard charger would draw excessive current and dry itself if given permission to do so.)

Or maybe the Blazer wasn’t breaking so much as charging in a highly degraded mode because it didn’t like the charger’s output?

[malfist]

The crazy thing is current is pulled, not pushed.

Give something 1,000 Amps and if it needs only 5mA, it'll only pull 5mA unless something is bad wrong in its power handling

[rational_indian]

Current can be "pushed" if you increase the voltage.

[malfist]

No, it can't.

Voltage is pushed, current is not.

A device drawing 5v@5mA from a 5v 1000A supply will continue to draw 5mA if you increase the supply to 100V or 100,000A.

Or at least it will until it's fried from the extra wattage. 5V@5mA is 0.025W, but at 100V, that same 5mA pull is half a watt.

But it's always 5mA

[rational_indian]

I am talking about a passive load (like a resistor). Increasing the voltage will push more current through it.

[malfist]

No, the resistor will pull more current.

If you supply a 100 ohm resistor with a 12V100Amp power source, the circuit is going to pull 0.12 amps from the supply.

If you supply a 100 ohm resistor with a 24V100Amp power source, the circuit is going to pull 0.24 amps from the supply.

The supply isn't pushing current, the characteristics of the circuit has changed and it's pulling more current.

[rational_indian]

It's just semantics at this point. You say pull I say push. A 24V supply can push twice as much current (through a resistor) as the 12V supply.