Quote Originally Posted by Fivetide View Post
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
That is only a 24V/5A so it will not work, at least not with any significant torque, if at all. You get 10A out only if you flip the switch to 12V out.

No, you will probably not die if you connect it, but of course, no guarantee is given by me. Anyway, why would you buy that to run motors? I mean, as far as I know, lead battery chargers pulse the output, which means that you need to modify the charger to get constant voltage and current out of it, and based on your questions, you can't do that. Why not buy a proper power supply? OK, more expensive... but there is a reason.