Mr M

Matt, I simply connected the eyelets on to the protruding ends of the tightening bolts already fitted to the battery so that I could connect or disconnect at will without loosening the fitments on the battery. I was looking at those comfort indicator connections but as the charger already came with a set of eyelet connectors I didn't bother. I might later buy a set as my wife's car battery had to be replaced this week too.

Marvelous ! Many thanks to Paul (Muddywheels) and to all you other contributors. I ordered the CTEK MXS 5.0 from Amazon on Thursday and it arrived today Saturday. I scrounged a couple of 10mm nuts from my neighbour and connected up the 'eyelet' connector to the 12v battery in the boot easily in a couple of minutes and then to the charger on Car/AGM cycle. It was up to stage 4 in an hour, stage 6 in two hours and then stage 7 (battery fully charged) after three hours. The car started without a problem after, ofcourse, disconnecting the charger. The little comfort connector plug now just peeps out from the bottom of the panel in the boot should I require it again. Whilst it was disconcerting to hear from so many contributors that they too had experienced low battery problems with relatively new vehicles left unused for relatively short periods(amazing to me who hadn't needed to charge a car battery in more than 30 years) I have learnt a lot from your shared experiences. Thank you all very much for your help and here's to many more years of trouble free motoring.

Thank you, Paul, for you swift response. I take it you have not had any problems with your Lexus dealership during service if they've seen the eyelet connectors connected to the battery and you've experienced no other electrical problems as a result of having done so?

Hello. Could someone with a practical knowledge of CTEK intelligent chargers please tell me whether they can be connected directly to the 12v auxiliary battery in the boot of my IS300h preferably with the 'eyelet' connectors and if so must the battery be completely disconnected from the vehicle or just its Negative lead when charging. I have recently experienced starting problems usually after a cold spell and worryingly after only as few as 5 days lack of using the vehicle. The car is fine when it eventually starts and I think regular trickle charging may be the answer as my monthly mileage is fairly low at present. I am aware that the car can be jump started from the connector in the engine compartment but the Owners Manual states that the 12v battery in the boot can be charged but has to have its ground lead disconnected before charging. The CTEK's handy eyelet connector would seem to do away with the need for constantly disconnecting then reconnecting to the battery. I would be grateful for some advice from CTEK users. Thank you.