Not a good idea to revive an old thread.
Better start your own.
I am currently trying to do the same thing, just for fun.
Measuring a chain of 24 lead/acid cells with small/cheap DPDT relays.
With 'flying caps', without loading, or unevenly loading cells.
And without specialised ICs made from unobtanium.
First stage (measuring) is done.
Second stage will be outputting the data via bluetooth to a smartphone.
Waiting for those parts.
Leo..
