After converting my xbr to 600cc some years ago,the electric start was no longer up to the job of starting the engine.Occasionally,it would manage to turn the engine over when warm,but a cold start was a lost cause.It was now time for a new battery,so I bought a Motobatt battery,very pretty in bright yellow.The reason for choosing a Motobatt was their claim that this new gel-type glassfibre whatsit construction gave 20% more cranking power for starting.Hmmmmm..... Well,I fitted the new battery today,and,as instructed,I did not charge it before fitting it.I pressed the starter button and the engine fired up instantly.The first time ever as a 600.I went for a run,and the engine starts on the button every time.I have no idea whether Motobatt batteries are as long lasting as other makes (the previous battery was a Yuasa,several years old by now),but they certainly have plenty of grunt for starting .Happy chappy now.