I have a mega watt 30 power supply that goes to 15 volts. I also bought a meanwell 30 amp that goes to about 17 volts. I would have to go look at it as I dont remember the model. I also upgraded the converter to a PD 4655(?). On top of all that I also have a Quick charge 50 amp industrial 36 pound battery charger that cost $400
For the fastest charging I use the Quick charge then I would use the PD converter. I would upgrade the converter first and be able to yell in the window "Hun, turn on the switch or flip number 3 breaker on as I showed you". The mega watt will smoke if pushed a little too hard. The meanwell is much more substantial but for the same money you can do a good converter upgrade.
Edit: I'll be back. I'm going out to find a model number
Mine is RSP-500-15 Voltage range 13.5 to 18 v 33 amps
If you have a die grinder or dremel tool you may be able to grind the head off the screw.
