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tow bar
by G Walker - 24/08/26 06:52 PM
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Joined: May 2025
Posts: 67 Likes: 15
Just Getting Started
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OP
Just Getting Started
Joined: May 2025
Posts: 67 Likes: 15 |
So - during my motorcycle years, I had an Optimate, which I'd connect to each motorcycle for a couple of days every month - particularly during the winter months when usage was significantly reduced. I was told this wasn't suitable for a car, and I acquired this CTEK unit, which seems to fulfil the same function. I'm interested your views on whether the same sort of application is advised - my Roadster has a specific 'cigar lighter' socket under the instrument panel which I understand allows direct charging. I'm having difficulty understanding whether there's any significant difference between the two units and more importantly whether there may be any drawbacks or risks associated with overcharging.
Many thanks!
Ben
2014 Roadster 3.7 2016 Audi S-Line Black Edition TT 2018 Mini Cooper (herself's)
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Joined: Jul 2007
Posts: 27,802 Likes: 749
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 27,802 Likes: 749 |
I would use the cigar lighter as the connection can be poor, I use the CETEK comfort connector to the battery with an inline fuse.
JohnV6 2022 CX Plus Four 2025 Renault Scenic Alpine etech "Yvette"
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Joined: Aug 2006
Posts: 7,929 Likes: 131
Talk Morgan Guru
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Talk Morgan Guru
Joined: Aug 2006
Posts: 7,929 Likes: 131 |
Ben, I use a MXS 5.0 and have found it to be excellent. In particular, I like the battery conditioner mode. After many years of use, I have zero complaints. One thing to watch is the price does vary drastically - I've bought my two via Amazon and found the prices swings by +/- £20. A site like CamelCamelCamel UK will give a good bench mark as to price trends and will alert you when the price drops to a level you are comfortable with. In terms of connection, I've tended to use these, direct to the battery, as John mentioned: https://amzn.eu/d/a63WuVpThe indicator one is pretty basic, with the traffic light system but does help a little if you don't want to plug your car in each time you use it and just want a simple visual reference as to if you need to charge it or not. You can, should you prefer, get one without the indicator: https://amzn.eu/d/hAMEZrl
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Joined: Nov 2011
Posts: 1,873 Likes: 174
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Nov 2011
Posts: 1,873 Likes: 174 |
I use the CTEK MXS 5.0 with magnetic comfort adapter for more convenience, no problems!
Ruut Bianchi Morgan PlusFour 2023 Bentley Midnight Emerald Morgan 4/4 4-seater 1990 Royal Ivory
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Joined: May 2014
Posts: 5,437 Likes: 131
Black Rat Charter Member
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Black Rat Charter Member
Joined: May 2014
Posts: 5,437 Likes: 131 |
I connected my CTEC directly to the battery terminals and drilled a hole through behind the passenger seat to feed the cable through for ease of connection, leave it connected most of the winter unless I'm using the car once or twice a week.
Keith 2013 narrow bodied + 4 Ruby.
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Joined: Jun 2014
Posts: 564 Likes: 8
Talk Morgan Regular
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Talk Morgan Regular
Joined: Jun 2014
Posts: 564 Likes: 8 |
Same as Keith for the connection. Whilst I have never tried to charge using the 12v lighter socket I have heard that it can cause problems so best go for the dedicated connector, the cables are normally supplied with the Ctek. Once charged the unit goes into a battery maintenance mode, no idea how it works but it does, so no chance of overcharging or damaging the battery. Have used the charger on my Morgan’s for the last 20 years and never had any problems.
Andrew 'Alice' 2013 Duratec Plus 4. Pearl Blue
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Joined: Sep 2010
Posts: 2,431 Likes: 17
Talk Morgan Expert
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Talk Morgan Expert
Joined: Sep 2010
Posts: 2,431 Likes: 17 |
I've used CTEk's for years, both direct to battery or through the "12v outlet'', ciggy lighter to me, never had a problem with either.
1969 4/4 1995 plus 8 1996 Plus 4 4seater 2002 Aero S1 2013 M3W 2014 Plus 8
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Joined: Feb 2016
Posts: 8,655 Likes: 407
Needs to Get Out More!
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Needs to Get Out More!
Joined: Feb 2016
Posts: 8,655 Likes: 407 |
There can often be a large difference between something working and something engineered to be optimal. The cigar lighter socket was designed for just that. It doesn't have any locked connection, relying on a sprung positive contact and little more than friction for the return connection, limiting the current it can handle. It's location under dash further adds to the likelihood of connection breaking. Clearly not best suited for alternate tasks. The supplier of my highly recommended Maypole 4 amp charger and some others, provide a small loom to allow permanent connection direct to the battery. This minimises volt drop by reducing the electrical path and many unseen connection points in between. It terminates in a polarity sensitive connector that matches that of charger and includes an insulating cover.
Richard
2018 Roadster 3.7 1966 Land Rover S2a 88 2024 Royal Enfield Guerrilla 450 1945 Guzzi Airone
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Joined: May 2025
Posts: 67 Likes: 15
Just Getting Started
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OP
Just Getting Started
Joined: May 2025
Posts: 67 Likes: 15 |
Marvellous - thank you all very much; that's really helpful. I'll continue with the cigar lighter plug-in and also continue with the system I use on the motorbikes of charging up for several days every month during the winter. Particularly useful to note no chance of overcharging, that's what I liked about the Optimate.
Many thanks All.
Ben
2014 Roadster 3.7 2016 Audi S-Line Black Edition TT 2018 Mini Cooper (herself's)
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