Trickle chargers and the new 3.0 48V system...
#26
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2018 S560 and 2019 E450 Wagon.
I've never tried sleep mode when leaving the car, normally I just put the windows down a few inches so the int has some air and leave the car unlocked and hook up the battery maintainer. I worry about locking the car and having the alarm on in that it could go off for some reason while I'm gone like in the middle of the night or something and wake up the neighborhood. I've never really had a problem doing it this way although I'm sure the battery maintainer has to work a little more than if I put the car in sleep mode and locked it up.
#29
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#30
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Porsche Cayman S, Mercedes W213, Nissan Titan, BMW X5, Chevrolet Suburban
I've never tried sleep mode when leaving the car, normally I just put the windows down a few inches so the int has some air and leave the car unlocked and hook up the battery maintainer. I worry about locking the car and having the alarm on in that it could go off for some reason while I'm gone like in the middle of the night or something and wake up the neighborhood. I've never really had a problem doing it this way although I'm sure the battery maintainer has to work a little more than if I put the car in sleep mode and locked it up.
Last edited by CarFan1; 01-09-2022 at 08:20 PM. Reason: typo
#31
Super Member
I'd like to mention that some vehicles (like my GTS) have 12volt Li batteries and these require a special Ctek charger specifically for Li batteries (which I have) to avoid overheating the battery. It looks like there is a Ctek charger that will handle both types.
Last edited by slk55er; 07-26-2022 at 08:27 PM.
#32
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2019 E 450, 2016 E350 4matic (retired), 2018 Ford Edge Sport, 2008 Porsche Boxster
The amount of charge these trickle chargers put out, it can take up to 24 hours to fully charge, is so small that there is no way they will ever damage any battery including a Li battery.
If you go into any Mercedes dealer you will see these massive chargers charging the showroom models on the showroom floor. That charger is a so many times more powerful than any trickle charger. There is no adverse effect on the 12 volt battery.
Just my $.02.
#33
Super Member
A quick Google search says:
You can use a lead acid charger on a lithium battery if you want, HOWEVER, you must NOT use a lead-acid charger if it has an automatic “equalisation mode” which cannot be permanently turned off.
Last edited by slk55er; 07-26-2022 at 09:53 PM.