Hi all: I have an unfolding project to make available as DIY (fully open) a derivative engine from my commercial project which has proven regeneration data to back it up. This is not a commercial effort. I mght make PCBs or component 'kits' available sometime down the road as some parts are surface mount and folks might prefer the surface mounted bits preinstalled on the PCB. Perhaps I'll 'retro' it for all thru hole parts space permitting on the PCB. Nothing smaller than 0805 parts so they are doable by hand and with a soldering iron. Here is my project page: https://hackaday.io/projects/hacker/10957 I'll add more pics and such soon. Note the B4 and After pics of the battery buss bar , and the sulfate removal. Also the bottom pic is the full fledged fully automated desulfator with microprocessor, battery sequencing, battery rerating, battery exerciser and Internet monitoring /control.