Had my CBF1000 from new for just over a year. Had starting problems throughout the winter and had to charge the battery frequently. Had it replaced under warranty by supplying dealer (HGB Ruislip) in November. Result no real imporvement -still found myself charging it each week.
Took the bike to Chiswick Honda for a regular service - asked them to look at the elctrics. On my return they mentioned they had replaced the battery under waranty. Now I have great voltage - problem solved.