A 65 dollar 36 amp Megawatt + 16 dollar pot does well itself. And it doesn't have that 1947 Art Deco Chrysler Building plastic. By the way all you folks with Mega/Meanwell units - radio shack has plastic STAND OFF screws. Screw them into the holes on the bottom of the units. The .ore standoffs the merrier. I have a ten pound transformer out of a Sears phart charger that I am going to lobotomize. Make a 60-amp/30 amp manual charger. Twist a timer - select an on/on switch high or low and letter rip. Old fashioned round analog volt and ammeters and an audio blaster to BEEP end of timer function. Back to the future.
