I have recently purchased a CTEK Multi XS 3600 battery optimizer, which has three settings, Bike, Car and Frost (below 5 degrees), as I do not use the bike so much in winter and it tends to sit in the garage unused for peiods of time.

After leaving this on the bike for about 7-8 weeks, today I tried to start the bike just to run it for a few minutes, and found that the battery did not seem to be fully charged. The bike would turn over and then I would get a clicking sound from under the right hand side cover. So I plugged in my normal car charger and after a couple of minutes tried starting the bike again, and this time it was fine.

Does anybody else on here use this battery optimizer ?
Anybody any idea why mu bike would not start the first time ?
Also, can you use the Frost (below 5C) setting on a bike battery ?

Thanks for any help on this.

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Stage 1 K&N, Stage 2 DNA, Kev fuel mod, Arrow Exhausts. Custom sticker job.