Pulse desulfator in Eagle with PCB included

I need a electric schematic design in Eagle with PCB of a pulse desulfator to be applied to individual cells of industrial batteries. Must include a 555 timer and other components. Option to be used with 1, 2 or 3 cells at the same time. Battery cells are 2V each and are batteries that range Ah’s from 510Ah to 875Ah. Batteries are lead acid. Any questions please message. Price is $50.00.