CTEK US 3300 12v
#3
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The Porsche Battery Maintainer is crazy expensive in my country and there's no way I'm going to expend that kind of money on a simple battery charger. Unfortunately I can't find CTEK's but I do have some other choices like Bosch (C3 or C7 model). Does anybody know if this ones would work ? I imagine that they would.... at the end of the day, it's a simple battery.
Another alternative would be the Optimate5 or Optimate6
Another alternative would be the Optimate5 or Optimate6
#5
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
The Porsche Battery Maintainer is crazy expensive in my country and there's no way I'm going to expend that kind of money on a simple battery charger. Unfortunately I can't find CTEK's but I do have some other choices like Bosch (C3 or C7 model). Does anybody know if this ones would work ? I imagine that they would.... at the end of the day, it's a simple battery.
Another alternative would be the Optimate5 or Optimate6
Another alternative would be the Optimate5 or Optimate6
![](https://cimg3.ibsrv.net/gimg/rennlist.com-vbulletin/2000x1504/a0bb836c_3206_4d0b_af41_458b02e0bf71_543fbd47650de11917cf7163a838d85fa4bad437.jpeg)
Optima Digital 400 display
![](https://cimg4.ibsrv.net/gimg/rennlist.com-vbulletin/1500x2000/de1ba642_3dbd_4c4a_a75d_53451d18b049_01a345d5c7630de3fdf8d348290b9951ae4c7be4.jpeg)
AGM Mode
Last edited by Sidvicious7; 04-04-2018 at 06:17 PM. Reason: model number CTEK
#6
#7
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Just curious, why does one need a battery maintainer? Is it because one does not drive the car for extended periods of time? If so, how long do the periods of non-driving have to be to justify using a battery maintainer?
thanks
thanks
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#8
Rennlist Member
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Correct. I used mine when the car was off the road for 6+ months (Canadian Winters suck as it relates to my P-car ownership). I also use it when I'm not driving my Boxster for a few weeks at a time ...