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Someone said it is not worth it to pay $129 or $200 or whatever for the Porsche branded ones, but there are so many choices and I don’t know which one to buy. I did search. Just whatever factory battery and would prefer it also work for an optima.
These things simply prevent flat spots if the car sits for too long on a cold floor. Also been using these for 2-3 years.
Maybe an overkill, but I like them and had no issues with them.
This is the one I have used. I am sure they are all good. My only purpose for replying is to endorse their products. I have no affiliation and I have had several over the years, zero issues.
This is the one I have used. I am sure they are all good. My only purpose for replying is to endorse their products. I have no affiliation and I have had several over the years, zero issues.
Battery tender plus with cigarette adaptor works great have been using them for over 10 years. They have been dropped, run over and still work. I also have the cteks because they are standard with amg,mclaren, Ferrari. The cteks seem more fragile. If you have lithium make sure you have the right one.
I have been using Battery Tender Plus since 2000. I have used them on my Ducati, Mastercraft boat, jet ski’s, and all of my cars. Never had a battery issue and never had a Tender go bad.
As recommended from members here, I recently went with this CTEK 7002 for my 2018 GT3 with AGM battery. I had CTEK's 3300 for the last couple cars and it worked wonderfully. I use the cigarette socket.
[QUOTE=911dev;15392804]As recommended from members here, I recently went with this CTEK 7002 for my 2018 GT3 with AGM battery. I had CTEK's 3300 for the last couple cars and it worked wonderfully. I use the cigarette socket.
You need a charger for AGM batteries ^^^^ These chargers use a different charging voltage and program.
The 7002 charger is for AGM batteries ^^ according to CTEK's manual. Both of the aforementioned units are correct for this application. Confirm with the manufacturer if in doubt.
And here:
CTEK (56-353) MULTI US 7002 12-Volt Battery Charger
Unique 8 step charging system with a patented program that tests battery condition and, charges and maintains to ensure maximum battery life and performance
No sparks, short-circuit proof and reverse polarity protected makes it safe for all the vehicles electronics and easy to use
Charges 12-volt lead-acid batteries (Wet, MF, Gel, AGM and Ca) from 14Ah to 150Ah (charging) or 14Ah to 225Ah (maintenance)
Maintenance pulse charging increases battery life and gives superb performance, and patented de-sulphation functionality allows for the recovery of slightly sulfated batteries
Water and dust resistant means it is safe to use in all climate situations
Includes two interchangeable connection leads, one with clamps, and one with eyelet terminals
Eight step, automatic switch charging and four separate charge modes that together allow for easy, convenient, no-watch battery charging
I had a battery literally explode a couple weeks ago that was hooked up to a CTEK 3300. Both battery and charger were very old, but the unit continued to indicate charging after the battery’s catastrophic failure...which makes me think it might have been the CTEK that caused it.
I have a Lamborghini-branded 3300 as well, but lesson learned...even though these extend battery life significantly, replace batteries after 4-5 years proactively. Battery acid cleanup is a whole lot more inconvenient than a dead battery.
I had a battery literally explode a couple weeks ago that was hooked up to a CTEK 3300. Both battery and charger were very old, but the unit continued to indicate charging after the battery’s catastrophic failure...which makes me think it might have been the CTEK that caused it.
I have a Lamborghini-branded 3300 as well, but lesson learned...even though these extend battery life significantly, replace batteries after 4-5 years proactively. Battery acid cleanup is a whole lot more inconvenient than a dead battery.
Lead acid or agm? This is what worries me about long term storage. Those batteries I know are going to sit for 2 months plus get removed and put on a charging shelf.
I find it odd that the 991.2 GT3 user manual recommends connecting a battery tender directly to the battery. However my Porsche dealer only sells a Porsche branded battery tender which connects to the cigarette lighter?
10-28-2018, 05:06 AM
What C-tek battery tender do I want for GT3?
