Unless you have a very expensive intelligent charger (not Ctek) keeping one on a permanent float charge is a very efficient way to destroy a battery hence the interest.
TIA.
Should I be dumping my CTEK for something better ?
My CTek is plugged into my Plus4 GDi most of the time and has been for the part five years with no issues.
Morgan Plus 4 Royal Enfield Classic 350 Brompton M6L Giant TCX Advanced