New batterys fitted from lucas worked fine 40 mins then started clicking took batt off the 3 plunger batt connections go up and down but one looks like some of the crome is missing reading reports it seems it might be the wiring be at fault the scooter is 5 years old hope ypu can help many thanks brian ps my mum is 88.

First I would look for voltage drop of both end of battery terminal.not a look or seem tight . you have to do it (voltage drop) and terminal at alternator.
now does alternator charging. take voltage of battery
if the problem occur have voltage of battery taken
like I read your problem it looks like wiring terminal ground and positive
the noise you hear is probably low voltage to a relay and the dropping voltage make the relay switch inside relay cycling noise click or buzz

next time you fit it adjust the mount that it goes into it may be getting pushed through it rather than just pressing the plunger if you cant adjust the mount try wrapping a cable tie around switch to hold it in place

clean all connections very good ( batt post connectors,gound wire from batt to frame/motor, also clean starter connections,and alternator connections) I know pep boys checked but you cannot properly check a battery unless it has a full charge!!!!! If it wont accept a full charge then batt is bad, If it charges to a full charge and fails a draw test the batt is bad. also when a draw test is done you can have the charging system checked also to make sure batt is recieving the proper charge input. all inexpensive checks, get it running and take it to a garage, 3 min test usually not even a charge most of the time. NOT A DEALER, and have them show you what they are doing. if you are a female have a male friend go with you or have it done. I dont care what anybody says!!!!!! When it comes to a inexperienced female, the DEALERSHIP,the REPAIR GARAGES will all try to get some kind of MONEY out of you before you leave their place of business.

Hi

Have you checked the fuel relay? I would look into that before going any further.

Regards
Dan

this sound to me like at first I thought it was a fuse, as the problem went on it shifted more toward a weak cell in the battery, if a weak cell sits for a little while the battery will not hold the charge in that cell and that will cause loss of power, "its charge", in tne other cells. you had mentioned you used another battery and it ran great but when the battery was removed, things went wrong. You may check to see if there is water in your battery

sounds like the battery to me, have it checked by a sparky, they dont give you much warning before they **** themselves, I had to replace mine only a few months ago

yur not supposed to and no yu dont need to reset them to the best of my knowledge my truck a 97 dodge ram 2500 v8 sat for like 8 months dead battery and had no problems but yes disconecting negative will remove power from the computer message me back with any questions

Make sure all connections at alternator are attached. On some, the regulator is inside the computer and if bad, requires computer change.

I have this problem right now also. Here is the deal as I see it. I have a 97 Saturn SC2 automatic (nuuf said!).
Against my intuition I let the guy at Autozone talk me into a battery, though I suspected the solinoid or the starter motor itself.
Put in the new batt and nothing but a single loud click. I took the new battery back and used the refund money to get a new starter.
I put it in and still just a loud click. I have cleaned the terminals and torqued the cable at the batt and starter.Because the solinoid clicks when I turn the key I am asuming (for now) that the ignition switch, neutral saftey switch and the "Startguard" (the little electric key you have to put in for your car to start) is good. In my knowlege, it has to be the main battery cable that runs from the battery to the starter. Next I'm gonna go out there and turn my key to the on position and connect a jumper cable from the battery directly to the starter solinoids high current side to confirm or bust my suspicion of the bad positive (red) battery cable. I will let you know how it goes.

sounds like the batt as had its the same prob as i had with mine to give it a bit of life so it will charge get hold of a bigger batt and two bits of wire and connect the + to + and - to - and it should charge but it prob will run down quick