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Battery Charger ?

I have the ctek mxs 5.0. I purchased it over two years ago just to keep the battery on my E63 fully charged. Was purchased from advice on this great forum. Thanks guys. It's been faultless. Great purchase it has been. I think it was £70/80 pounds.

I think I know the answer, but is it ok to keep the ctek attached to the battery charge points on the vehicle constantly. As I think once it reaches its full state of charge it just keeps it maintained and tops up when the ctek detects a drop in charge.
 
I think I know the answer, but is it ok to keep the ctek attached to the battery charge points on the vehicle constantly. As I think once it reaches its full state of charge it just keeps it maintained and tops up when the ctek detects a drop in charge.
Whilst parked, yes, it’s designed to stay in situ long term. Probably best not to leave them attached whilst driving. Instead fit the CTEK comfort connect or a Magcode connector.
 
I have the ctek mxs 5.0. I purchased it over two years ago just to keep the battery on my E63 fully charged. Was purchased from advice on this great forum. Thanks guys. It's been faultless. Great purchase it has been. I think it was £70/80 pounds.

I think I know the answer, but is it ok to keep the ctek attached to the battery charge points on the vehicle constantly. As I think once it reaches its full state of charge it just keeps it maintained and tops up when the ctek detects a drop in charge.
Use the jump start pegs rather than the battery terminals if your earth has the BMS gizmo attached.
 
Thanks guys. I also use the jumping points for the connection points for the ctek.

I also disconnect the ctek when I drive the car.

Again thanks for the advice 👍
 
Looking for a battery charger, what would be recommended for a 2013 Mercedes-Benz E250 Cdi AMG Sport Coupe with start/stop?

Preferbly a CTEK or NOCO as I can get a discount on them. But not sure which one is correct/best for my car

Thank you
Aldi and Lidl each offer chargers a couple of times a year for about a tenner and they work fine , they have maintenance , recovery and cold weather programmes , as long as you aren't trying to recharge a completely dead battery , for which you need a 'dumb' charger to get it started off , then the other ones will work fine once there is some charge in the battery .
 
Just be aware, unlike CTek & Noco, many of the cheaper ones do not start charging again if the power supply is interupted for even a second or two, they just switch off. CTek and Noco will both start charging again as soon as the power is restored. The Noco appears to built far better than the CTek, even the wire gauge for the connectors is twice the thickness.
That is because you have a choice of programmes to select from when you put the battery on charge : 6 or 12V , normal , maintenance or recovery modes , each needs selected by successive button presses - it isn't the fault of the charger if your electricity goes out .
 
That is because you have a choice of programmes to select from when you put the battery on charge : 6 or 12V , normal , maintenance or recovery modes , each needs selected by successive button presses - it isn't the fault of the charger if your electricity goes out .
Don't think it's anything to do with what program it's on or who's fault the electricity went off. The CTek and Noco are designed to resume charging when the power is restored. The cheaper ones are designed to stay switched off when power is restored. So if left unattended, you might find the cheaper ones have not been charging your battery when you assumed it was. Choice of programs is irrelevant.
 
Because they use crocodile clips like everyone else?
The quick disconnect that connects the clips or o rings connectors to the charger are unique to noco. On every other charger, they are exactly the same
 
The quick disconnect that connects the clips or o rings connectors to the charger are unique to noco. On every other charger, they are exactly the same
Ok, but they are built better than all the others, so I would disqualify all the others and get the Noco!
 
as long as you aren't trying to recharge a completely dead battery , for which you need a 'dumb' charger to get it started off , then the other ones will work fine once there is some charge in the battery .
Forgive my awful description however I believe that you can connect a healthy battery to the completely flat battery, along with the charger, to kick start the charging process. Once it’s got some charge in it you can disconnect the additional battery and it will continue to charge.

I think the OP has now bought a CTEK MXS 5.0 so he should be able to revive very flat batteries with that - certainly I’ve managed it on pressure batteries which were drained completely flat and left for 6 months in a completely discharged state. That’s not good for the long term health of the battery though and it’s longevity will have taken a hit as a result.
 
Don't think it's anything to do with what program it's on or who's fault the electricity went off. The CTek and Noco are designed to resume charging when the power is restored. The cheaper ones are designed to stay switched off when power is restored. So if left unattended, you might find the cheaper ones have not been charging your battery when you assumed it was. Choice of programs is irrelevant.
It is clear that is how they work , so why would you assume it would start charging again when it is clear it won’t ? In any case , if your power goes out then unless you either have a UPS or a backup generator then no charger will be working . The point is that an unreliable electricity supply is not the fault of the charger .

If you experience a power cut , I’m not sure how you wouldn’t know about it ( other than if power went off during the night , but even then you’d awake to have clues like clocks needing to be reset , and restarting the charger would just be another such thing ) . In my house , if the power does go out then the two UPSs that protect my computer system start sounding their alarms , the burglar alarm starts sounding an internal alarm to let me know it is running on its internal battery and the smoke/CO alarms also start chirping to let me know the mains power has failed . If it stays off too long , I do have a 4KVA generator I can start to keep the freezer working and a few lights on .

If I want a charger to resume charging then I have either a cheap Gunson ‘dumb’ charger that will do exactly that , or my ancient ( 50+ years old ) Crypton Chargemaster 200A charger , which will start any vehicle irrespective of the state of charge of its battery , or , with care , put a substantial charge into a battery within a short space of time .
 
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