Battery 'Maintainer' VS. 'Tender'?
#31
Looks like CTEK Multi US 3300 ($69.99 via their site) is the same as Porsche's Dual Mode Charger (PN 95504490054) @ $114.95 at Suncoast.
The older battery maintainer (PN 98061198100) is $54.99 at Suncoast. Does this older one detect battery is charged and cut itself off?
The older battery maintainer (PN 98061198100) is $54.99 at Suncoast. Does this older one detect battery is charged and cut itself off?
#32
I just got a CTEK US 3300 from these guys, price seemed very good and they had the lighter plug.
http://www.racerpartswholesale.com/c...ttery_Chargers
http://www.racerpartswholesale.com/c...ttery_Chargers
#33
Has anyone tried putting an Optima RedTop battery in their Porsche? I did this for my other car and it can go at least 3 weeks without charging as it's a Spiracell battery. They sell it at Costco and it has a 3 year free replacement policy I believe.
#34
I had no problems starting my car 1st time after the car was sitting in a garage for 3 weeks recently. I assume the result depends on both the age of the battery and the amount generally driven each day/week. IMO it would be a public relations nightmare for Porsche if batteries were dying after even 4 or more weeks of the car not being driven - assuming a full charge prior to that. If someone drives their car only occasionally or on weekends - of course that is different.
#35
My understanding is that car batteries lose about 1%/day of their existing charge at approx. 70 deg. F. This does not take into account any draw from systems that may be working in the background. So, if a car with a good battery is sitting for one month at mild temps. I would imagine there should be no problem starting..... assuming no significant draw from on board systems. The charge would be weaker if at low temps. of course ( < 50F)
#36
My understanding is that car batteries lose about 1%/day of their existing charge at approx. 70 deg. F. This does not take into account any draw from systems that may be working in the background. So, if a car with a good battery is sitting for one month at mild temps. I would imagine there should be no problem starting..... assuming no significant draw from on board systems. The charge would be weaker if at low temps. of course ( < 50F)
#37
OK - I'm a little confused. How long "should" a Porsche battery last if you only drive short distances (not a daily driver) and you DON'T use a battery maintainer VS how long if you do use the maintainer. It appears that you could just buy a new battery after a few years and save yourself the hassle of plugging this thing in weekly.
#38
OK - I'm a little confused. How long "should" a Porsche battery last if you only drive short distances (not a daily driver) and you DON'T use a battery maintainer VS how long if you do use the maintainer. It appears that you could just buy a new battery after a few years and save yourself the hassle of plugging this thing in weekly.
I don't think that is so much the point. There is a lot of electronics in these cars and having a weak battery that is never getting a chance to fully charge is more the issue. That and having to call 1800PORSCHE to come get you once it does get too low.
And think of it - it is good practice for preparing for the day of the electric car - I'll already be used to plugging mine in.
#39
CTEK 5 years later...
So after 5.5 years and only 21K miles, I thought I should post back on this. I use the CTEK always since this old post. My drives are short - 5 to 10 miles most often and sometimes I don't drive for a few days.
I still have the original battery.
I hope this helps those considering this fairly inexpensive device. It seems to have helped keep my battery in good shape. I hope I haven't jinxed myself now.
I still have the original battery.
I hope this helps those considering this fairly inexpensive device. It seems to have helped keep my battery in good shape. I hope I haven't jinxed myself now.
CTEK is the same as Porsche, just no logo, so you save about $60! I leave mine connected always. When the car was new, it took over a day to get the Green light, so I reckon sitting on the lot and short test drives is worse case scenario for battery health - and my short trip driving style is no better.
#40
The CTek is great. As others said just like the one Porsche sells but cheaper cause it's missing a badge and Porsche tax. On Amazon for $52 if anyone is interested - http://amzn.to/1vPChRy
#41
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