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Old 11-30-2023, 02:18 PM   #21
Alan
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The only downside to having the clips instead of the cigarette lighter in the 718 is you need to remove that big plastic piece by the windshield to access the battery Ö I have had mine removed for years in the Cayman for that very reason. Does the 718 have an outlet that is always on even after the car is shut down

The Corvette is so much easier, it has a cigarette outlet in the frunk dedicated for the factory battery tender which I believe is is made by CTEK.
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Old 11-30-2023, 05:01 PM   #22
JST
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You can wire a pigtail to the battery of the Cayman/Boxster and leave it permanently attached, and just tuck it under the plastic cover when youíre not using it. Thatís what Iíve done on both of mine.
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Old 11-30-2023, 06:02 PM   #23
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It seems like I have previously mentioned this, CTK makes an adapter to swap out the alligator clips for the 12v cigarette adapter. I have had one for several years (see pics), but I have not used it as I prefer the direct to battery method.

Two 12v options directly from CTEK.

https://smartercharger.com/collectio...cator-cig-plug


https://smartercharger.com/collectio...nnect-cig-plug
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Old 11-30-2023, 07:55 PM   #24
Josh (PA)
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I have sae quick connects on my Porsche and 4 wheeler to connect to the chargers. Makes it easy

https://www.amazon.com/Terminal-Conn...ps%2C94&sr=8-4
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Old 12-01-2023, 12:04 PM   #25
John V
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I have a NOCO Lithium battery in the race car and a NOCO Genius charger. it's fine. Nothing special about it. I have a CTEK charger (no buttons) that maintains the (dual battery) Ram. It's fine. Likely I'll just end up using that one for the Cayman over the winter.

I also still have two Battery Tender maintainers. One is plugged into my lawn tractor, which lives outside, uncovered. The BT unit is under the plastic engine cover, so it's kind of shielded from rain and snow. It's been out there five years. My other BT maintainer is on our generator. Also outside, but in an enclosure, and it's lived out there since... 2017 IIRC? No issues.

Personally I'd just use the CTEK you have, until it stops working.
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Old 12-01-2023, 06:55 PM   #26
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My old, old CTEK 4 would still be going if I had not ridden off with a motorcycle still connected. No button issues in many years. The CTEK 5 allows for car vs motorcycle as well as regular/agm/deep recovery modes, for a combination of 16 or so charging modes.

I did recently buy a Noco booster, haven't had a booster before. Seems nifty. I use it far less than the ctek. In fact, I haven't used it yet.
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Old 12-01-2023, 07:46 PM   #27
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Quote:
Originally Posted by John V View Post
I have a NOCO Lithium battery in the race car and a NOCO Genius charger. it's fine. Nothing special about it. I have a CTEK charger (no buttons) that maintains the (dual battery) Ram. It's fine. Likely I'll just end up using that one for the Cayman over the winter.

I also still have two Battery Tender maintainers. One is plugged into my lawn tractor, which lives outside, uncovered. The BT unit is under the plastic engine cover, so it's kind of shielded from rain and snow. It's been out there five years. My other BT maintainer is on our generator. Also outside, but in an enclosure, and it's lived out there since... 2017 IIRC? No issues.

Personally I'd just use the CTEK you have, until it stops working.
Thereís a point at which I think these age out and should be tossed. Iíve been off Battery Tender ever since one failed and boiled a battery over.
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Old 12-05-2023, 07:13 AM   #28
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Aside from electrolytic caps, there's nothing to age out.
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Old 12-05-2023, 10:04 AM   #29
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Quote:
Originally Posted by John V View Post
Aside from electrolytic caps, there's nothing to age out.
That's a pretty big aside. But also maybe you don't have this experience, but MY experience is that cheap circuit boards age out.

Also, once you've had a tender boil over a battery, you get a bit less enthusiastic about continuous plug in.

(Also, anyone plugging in a tender long term REALLY should have surge protection.)
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Old 12-05-2023, 10:28 AM   #30
John V
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Well, those caps take a long time to age out. But it is a risk. PCBs don't really age out, but they can fail if they're mishandled or operated in inappropriate environments. Thermal cycles are a big contributor to PCB failures.

I'm an advocate for regularly checking on any electronics that are continuously powered. I would advise that your experience with a BT branded maintainer is not necessarily indicative of an issue with that brand - the same risk applies to any of them.
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