Are most home circuits able to handle 12V 50 amps on a 10/20/50 Amps?
It's no problem for the wall outlet to supply 120VAC (5 amps, plus losses, plus a bit for &quot;12V&quot; battery chargers run above 12 volts in real life, but still less than half a 15 amp outlet's capacity) to run the charger at 12VDC/50A
It's usually a bad idea to use the 50A setting on the charger for the sake of the battery, not the wall outlet.
On the third hand, if you need to use a battery charger on your car much at all, either the battery is well on its way to expiring or you need to fix the charging system in the car. But you can certainly hasten the demise of a battery on its way out by smacking it with a 50A charge.