Been offered a bike from a friend of a friend with one for the first di2 incarnations (2011?) on it for a reasonable price.
Apparently, the bike has not been used much (if at all), but I’m concerned about buying a bike with an 8/9 year old electronic groupset on it (if it were mechanical, I’d buy it no question).
Anything to particularly look out for with old (infrequently used) electronic groupsets? Was the first di2 even any good?