Ctek MXS 5 is what I have and will highly recommend.

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F122730236944

 

Thanks for the response... do you use the cigarette lighter as a connection point?

Thanks
Dave Bailey

 

No mine came with a pair of crocodile clips and a separate lead you can hard wire in under the bonnet. I'm not sure if it would charge through the cigarette lighter as I don't think it's permanently live.

For your info, CTEK also make the Mercedes branded chargers which are a lot more expensive. They even use the same cases.

 

Just found the following info, and NO, I don't work or have any association with them ˜

 

Thanks for all your efforts here....

Dave Bailey

 

If you charge it from the cigarette lighter is that not defeating the object of using the thing??I have one for another summer-use car I had, and it plugs in the wall. Lovely piece of kit, just leave it on over the winter

 

If you charge it from the cigarette lighter is that not defeating the object of using the thing??I have one for another summer-use car I had, and it plugs in the wall. Lovely piece of kit, just leave it on over the winter

They are talking about putting power into the cigarette lighter socket, not taking power from it.

Remember the lighter circuit is connected to the battery, so you can run the power in in reverse as a trickle charge. Just depends on if that circuit is a permanent circuit or switched with the ignition.

 

The last days I am also making research in car battery chargers.. Apparently CTEK is the best company out there and is actually the OE maker for battery chargers for most of the automotive companies like Mercedes Benz, Porsche, etc.

The original MB charger is the exact same charger with MXS 5.0, essentially just rebranded (it even has the ctek model name written on it). I can have the original from the dealer for circa 120euros, whereas the MXS 5.0 is abt 92euros, but if you add on that another 15euros for the cigarette lighter adapter (the MB version comes with the cig lighter adapter, the ctek comes with another adapter which is screwed on the battery terminal bolts), it makes the MB more attractive, having the mb logo on it for the same price

As for the cig lighter adapter, it has to be a "live" socket, i.e. not to cut the power when ignition is off. Haven't checked the A45, but in my W463 the front lighter cuts off with ignition, but the rear is permanently on.

 

Another vote for ctek.

http://www.aclassclub.co.uk/forum/battery-charger_topic12117_page1.html?KW=Ctek

 

Hi All

A question if anyone can advise,

which Ctek charger is recommended for the 45 plus 2020.

the mxs 5.0. Or the start,stop version?

 

Any is the answer, if you’re just looking to do a maintenance charge in between car usage.

They are all intelligent, so even the small 3.8 will do a good job (but will take longer).

 

Thanks, so the start stop option is not really important?

 

It looks to be an identical unit to the 3.8 (same charge current) but with less indicators and less functionality!

So personally, I think it’s a marketing badging exercise to make people think that they need this if they have a start/stop car 😂


If it were my money I’d go for the 3.8 or 5 as those have more functions and indications

 

Thanks again. Ill go with the 5amp mxs. Is there any discounts available from sponsors?
£79 halords, £64 waveinn spain internet site.

 

Hi, The MXS 5 is a superb charger & you'll find it highly recommended in other posts & other Mercedes forums

 

Most modern cars with auto start stop require AGM (aluminium glass mat) type batteries. I would recommend the MXS 5.0 as it support charging of AGM batteries.

 

Hey folks, I'm planning to go on a long vacation abroad and won't be using the car for ~2 months. Any specific advise (e.g. fuel level to leave at?) on how I should leave the car so that I have the least trouble getting it back on when I come back?

I'll be using a dedicated indoors parking, so weather wear-and-tear is sorted.

 

I gave my old A220 back about 2 and a half months again but I still got it connected to my Mercedes Me. They haven’t used the car at all in that time but the battery has been on critically low for about a month a half but it hasn’t died yet. So in terms of battery it should be fine.

 

2 months will be fine - battery may need a boost when starting again (unless you can leave it on a trickle charger?).

 

Yes, if you can leave it on a CTEK intelligent charger.

 

I would also inflate the tyres to their maximum recommended pressures as otherwise you could come back to indented tyres.

 

Also disarm keyless entry (double click clock button on the key) as this uses battery when activated.

 

MXS 5. Is it safe to use this on a A class A180se auto.
I notice that the initial charge when first plugging in, ( indicator led 1) inputs
15.8V. ( Same as recon mode)
However, the MB handbooks states that a charge should not exceed 14.8V?
Whereas the mxs 7 inputs an initial charge of 14.7V.
Any advice?

 

It’s fine. It’s pulsing for the desulphation stage. MXS 3.8 does the same 15.8V during desulphation phase.

 

Thanks Veeeight.
So, as my battery is three years old, is it safe to use recon mode 15.8V ?

 

Yes, shouldn’t be a problem. I’ve used recon mode on much older batteries!