Most of us on here don't have the ability to access complicated test equipment to build or test these designs so they will work correctly. What we all want is the circuit for a Novak Smart tray that we can build for $200 and have the pride to say we built it ouselves with no help. Might look like shit BUT I made it. I think that is the basis for the original question.
I have a design for a battery equaliser BUT it uses diodes to cutoff voltage at around about 0.6v. This will kill IB cells and is not very accurate for GP's.
Any one have something better???