Seadoo gtx155 4 tec jet ski

2002 4 stroke gtx 155 seadoo jetski. 120 hours. In good condition and running well. The only problem is i think it needs a battery as it has to be charged constantly and when turned of it doesn't have enough power to start it. It had a new starter and new rectifier so they are not the problem. It runs and rides perfect all day as long as it isn't turned off. Only selling to buy a bigger ski and will still be used until sold. £2200 no offers at all!!