what to look for in a battery tender

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12-31-2023 | 10:18 AM

#16

Race Car

Joined: Oct 2002

Posts: 4,551

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From: New York

I use the OEM Porsche version on the Porsches and have used the CTEK 5.0 on a vintage vehicle, it worked as expected.
CTEK, as I recall has a 5 year warranty.

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12-31-2023 | 01:27 PM

#17

Upscale Audio

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Joined: Sep 2015

Posts: 2,467

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From: Southern California

Quote:

Originally Posted by ngng

Just a reminder that newer tenders like the CTEK require the battery to be within a certain voltage range or they will not work.

Correct. There are a few on the market that allow a forced charge if you are trying to de-sulphate the battery.

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01-01-2024 | 01:37 PM

#18

Spyerx

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Joined: Mar 2012

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From: SoCal

I have 5 ctek. 3300, 4.3, lithium, 5.0. They all work fine for many years. The newer ones support a couple more features (AGM, desulfate, etc), i don’t even think about it. Plug in, car is always charged.

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