fitted new Varta YTZ14S-BS Fun Start... the other had a dead cell... so replaced free of charge !! :devious
so bike key on but engine off... battery reads 12.8V... @ idle reads 14.2V... & @ 4000RPMS it drops too 13.8V !? :eatcorn
i thought @ 4000RPMS it would charge the battery & read more...