Hello again, I have had little time to be here in the last weeks and months…unfortunately. I now have a problem with the fat one again, I was without problems with the fat one in Germany, when I was back in Spain, he jumped on the next day as usual morning and noon, but when I wanted to start in the evening nothing went any more, I clearly thought the batteries, because the voltage was only displayed at 9Volt at the instuation, so both batteries were reinstated and charged, connected and the same, the on-board voltage rises to 9 volts and after a minute it is max. 11volt, have no plan what that can be, I also tried it with starting aid, but is the same, meanwhile it stands 3weeks.