I have a 220volt/12volt battery charger. It works real well as an electrolytic rust remover. I took baking soda and baked it at 300 degrees for an hour which changes it from Bicarbonate of soda to sodium carbonate or washing soda. That gave a better bath and it worked very well. 20 minmutes and most of the rust was gone.

I changed the solution to a large round tub to do a couple of forks and some rack parts. more pictures coming. It was super easy.