Ctek chargers

[Reggie20]

First time I've used a Ctek charger. Can you leave them charging your car indefinitely? Do they harm the battery at all?
Thanks

[ex-devonpaul]

In theory you can, as it goes into "maintainence" mode. However with any of these 'smart' chargers there is the odd tale of them getting stuck and boiling or letting a battery go flat.

Personally I cycle mine between several vehicles, hopefully remembering to change the setting to suit tha battery being connected, but I know some people use a timer plug to switch them off and on every week or so.

[andrew]

do you actually mean charger
or, more likely, one of their battery conditioners ?

[M138]

Leave mine on all the time when not using the car, Maserati Spyder.
Technopart battery came with the car in 2018 still going strong

[Trev450]

I have 3 of them on separate vehicles and they are left on all the time when the cars are not in use.

[NDA]

Reggie20 said:

First time I've used a Ctek charger. Can you leave them charging your car indefinitely? Do they harm the battery at all?
Thanks

Assuming it's a battery charger like the CTek MXS-5, then yes. I have cars on them for 6 months or so, 24/7 without issue.

[supersport]

Me too. Fire and forget and have done so for many years.

[Reggie20]

Thanks for all your comments - and yes, they are battery conditioners rather than chargers. Will now leave mine plugged in whilst we're on holiday.