Advice please : Quick voltage and amps question + speed control

[Fivetide]

Ok I have 3 x 18v 3a motors to run in parallel. I was thinking of using a 24v 10 amp battery charger..will I die ?
And can I add a potentiometer somewhere easily to it or do I need a PWM with pot?

Here’s what I was thinking:
10AMP 12V/24V HEAVY DUTY BATTERY CHARGER ELECTRICAL CAR VEHICLE VAN TRUCK LORRY

Split the power to :
3 x UK New 12V-36V 3A DC Motor Speed Regulator Controller Switch Control PWM HHO RC

Then wire all 3 pots up to a bigger pot and use rubber soled shoes to test it all?
Now I know if I wired all 3 motors to the charger they will work (I’ve seen it on youtube) but no speed control.

Just seen Lee's post , wonder if I could run them off one of these.. ? LINK Mean well SP-200-24 24v 8.4a PSU power supply battery charger

Or AC-DC Switching Power Supply Module AC 100-240V to 24V 9A Power Supply Board FK wonder if the FK stands for FUCK ! when it blows up and takes an eyebrow off ?

Brand new ang High quality
Input Voltage:AC 100-240V 50/60HZ
Output Voltage:DC 24V
Output Current:6-9A
Output Power:150W(Max 220W)

Thanks Five :)