Battery tender for GLK350?
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Joined: Jan 2015
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2020 C8, 2020 defender 110X, 2019 720S, 2014 GLK 350 4matic, 2015 escalade platinum, 2013 RRS HSELux
Battery tender for GLK350?
Since it's not my daily. Anybody tried a battery tender?
Last edited by sblvro; May 30, 2023 at 12:59 AM.
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Joined: Sep 2015
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2013 glk 350
It’s a good idea , at reduced voltage sulfation will ruin any battery fairly quickly. Somewhere around 12.3v is as low as you should go.
Maybe all your vehicles are in need of at least monitoring voltage and using a charger maintainer. CTEK had the Battery Monitor that monitors charge and it has an app you can check full status. I don’t know if it’s made anymore.
im sure other companies make something similar. I also use a CTEK charger. Most every top brand even Rolls Royce , Mb etc just put their name on a CTEK and charge xx more.
I like that it has a plug you hardwire in so hooking it up is quicker. They sell many Models of chargers that maintain and restore from Sulfation.
Sulfation is something you need to read up on. That is what you need to avoid. Voltage needs to be kept high or a battery self destructs quickly . A maintained AGM can last 7-8 + years. A non maintained can go bad in 1-2. A boat could go dead over a winter. A maintainer will save you a lot of money and headaches. Get a decent load tester also , so you know what you really have .
There are simple maintainers, which also charge. Or for a bit more a full featured CTEK or other brand. Like Noco. I think I have 6 chargers I’ve collected over many years.
I just looked at the photo, two of those cars have battery maintainers on them , one is a CTEK, the Vette has what looks like a CTEK on the couch. So why ask
Maybe all your vehicles are in need of at least monitoring voltage and using a charger maintainer. CTEK had the Battery Monitor that monitors charge and it has an app you can check full status. I don’t know if it’s made anymore.
im sure other companies make something similar. I also use a CTEK charger. Most every top brand even Rolls Royce , Mb etc just put their name on a CTEK and charge xx more.
I like that it has a plug you hardwire in so hooking it up is quicker. They sell many Models of chargers that maintain and restore from Sulfation.
Sulfation is something you need to read up on. That is what you need to avoid. Voltage needs to be kept high or a battery self destructs quickly . A maintained AGM can last 7-8 + years. A non maintained can go bad in 1-2. A boat could go dead over a winter. A maintainer will save you a lot of money and headaches. Get a decent load tester also , so you know what you really have .
There are simple maintainers, which also charge. Or for a bit more a full featured CTEK or other brand. Like Noco. I think I have 6 chargers I’ve collected over many years.
I just looked at the photo, two of those cars have battery maintainers on them , one is a CTEK, the Vette has what looks like a CTEK on the couch. So why ask
Last edited by Mmr1; May 30, 2023 at 01:35 AM.
Thread Starter
Senior Member
Joined: Jan 2015
Posts: 370
Likes: 16
2020 C8, 2020 defender 110X, 2019 720S, 2014 GLK 350 4matic, 2015 escalade platinum, 2013 RRS HSELux
It’s a good idea , at reduced voltage sulfation will ruin any battery fairly quickly. Somewhere around 12.3v is as low as you should go.
Maybe all your vehicles are in need of at least monitoring voltage and using a charger maintainer. CTEK had the Battery Monitor that monitors charge and it has an app you can check full status. I don’t know if it’s made anymore.
im sure other companies make something similar. I also use a CTEK charger. Most every top brand even Rolls Royce , Mb etc just put their name on a CTEK and charge xx more.
I like that it has a plug you hardwire in so hooking it up is quicker. They sell many Models of chargers that maintain and restore from Sulfation.
Sulfation is something you need to read up on. That is what you need to avoid. Voltage needs to be kept high or a battery self destructs quickly . A maintained AGM can last 7-8 + years. A non maintained can go bad in 1-2. A boat could go dead over a winter. A maintainer will save you a lot of money and headaches. Get a decent load tester also , so you know what you really have .
There are simple maintainers, which also charge. Or for a bit more a full featured CTEK or other brand. Like Noco. I think I have 6 chargers I’ve collected over many years.
I just looked at the photo, two of those cars have battery maintainers on them , one is a CTEK, the Vette has what looks like a CTEK on the couch. So why ask
Maybe all your vehicles are in need of at least monitoring voltage and using a charger maintainer. CTEK had the Battery Monitor that monitors charge and it has an app you can check full status. I don’t know if it’s made anymore.
im sure other companies make something similar. I also use a CTEK charger. Most every top brand even Rolls Royce , Mb etc just put their name on a CTEK and charge xx more.
I like that it has a plug you hardwire in so hooking it up is quicker. They sell many Models of chargers that maintain and restore from Sulfation.
Sulfation is something you need to read up on. That is what you need to avoid. Voltage needs to be kept high or a battery self destructs quickly . A maintained AGM can last 7-8 + years. A non maintained can go bad in 1-2. A boat could go dead over a winter. A maintainer will save you a lot of money and headaches. Get a decent load tester also , so you know what you really have .
There are simple maintainers, which also charge. Or for a bit more a full featured CTEK or other brand. Like Noco. I think I have 6 chargers I’ve collected over many years.
I just looked at the photo, two of those cars have battery maintainers on them , one is a CTEK, the Vette has what looks like a CTEK on the couch. So why ask
Senior Member
Joined: Nov 2012
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E63 S AMG, CLS550 4matic, C63 Ed 507, Volvo XC90 T8s
Standard Deltran trickle chargers/battery tenders you get at Costco have done just fine with our GLK and our other MBs too. Seems like it helped prolong the life of our CLS battery - 9.5 years old and still on the original factory battery
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Joined: Sep 2015
Posts: 2,585
Likes: 343
2013 glk 350
I bought a solar charger I want to have hardwired. With todays massive drains (cellular alarms, and systems) , im surprised this isn’t built in high end cars. Sulfation is a big issue but thankfully much less due to the great benefits of AGM . Actually right now I am putting a CTEK charger on my Glk, since I don’t drive it enough. A Solar panel won’t do a lot since it’s garaged .
