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2006 CTS 3.6L
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18 Posts
Discussion Starter #1
So my 2006 CTS 3.6L is now a second vehicle and I only use it once every few weeks. The battery seems to drain after sitting for a while but I do not see any parasitic electrical drains, but the hot southwest climate I would think takes a toll, and I prefer not to keep a charger on it, would like to just get in and go I usually buy the best battery every 2 years or so that AutoZone or Oreillys offers, but wondering if anyone know of a battery manufacturer that makes a battery that might hold up better, last longer without trickle charging, that would fit n the CTS battery compartment? Also, sometimes it takes turning the key to start several times before the starter kicks in, so wondering if maybe a starter issue developing also, would appreciate anyone's thoughts? Thanks.
 

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96 Fleetwood, 94 Fleetwood, 07 CTS, & 94 Caprice Wgn
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674 Posts
I think you may have a drain issue. I live in NH and head down south for the winter. I park the car the end of December and don't start it until the middle of April. I don't disconnect anything, just park it. It's not uncommon for the weather to get -25*. It always starts right up.

The best battery for me that I have found, is WalMart's best battery, that has a 3 year guarantee. Just bring it in and get a new one, no prorating BS. They return the battery and you buy a new one, restarting the clock for 3 years again.

Works for me

Tom
 

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2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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69,105 Posts
Normal parasitic drain on these cars, after RAP dropout, is about 25 mA. Depending on battery condition that will kill it in 2 - 4 weeks.

Nothing wrong with connecting a small Battery Minder during layup periods. They keep the battery fully charged and desulfated - will NOT boil the electrolyte dry. They also greatly extend battery life.

My STS is now a garage queen and sits there with a 1.2 Amp battery minder connected 24/7 - nary a problem.
 

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06 CTS Sport/Luxury package
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9,814 Posts
Most, if not all, repair shops have battery maintainers for those that are going to be in the shop for over a week. This is for the modern cars, like the CTS, as they tend to have a constant drain of sorts.

KOT
 

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2007 Blue Chip Luxury 3.6L
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28 Posts
So I work on a ship for 4 weeks at a time. Always left my car in a parking lot for 4 weeks. I've been doing this for 30 years. Now that I have a CTS, now I can't do that anymore? Most people I work with do the same and have newer vehicles than my 2007 CTS. They don't have an issue?

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