I have an Anti Gravity lithium battery in my 2018 TTS. I installed it over a year ago when I installed after market intercoolers - just to counter the weight gain from the intercoolers. The jump start feature is definitely a big advantage. I can't speak to longevity since I haven't ha it that long but I've been very happy with it so far.

 

Hi Kyrosnick, 40Ah is pretty par for the course with a daily driven stock set up...if we're running any aftermarket accessories/electronics or perhaps if the vehicle is not driven all that frequently we may lean more so towards the 60Ah as being more ideally suited.
Best regards,
Chad(chad@antigravitybatteries.com)

 

I chose the 40 Ah battery and it has served me well. I ended up getting a separate battery for my Dashcam because that previously that would drain both my factory battery and the Anti Gravity set up. However with the AG I was able to use the built in jump start.

Since making the switch on the dash cam set up to include a separate supplemental battery I have had zero issues. No problem with doing countless Cobb AP map changes to the ECM for both the engine and pdk without hooking up a charger.

 

The reason I chose the 60AH version. At the time i was using a clip on battery tire inflator to fill two different cars at the track and I use a garmin catalyst. Plus I use my COBB at the track without a charger hooked up Yeah I know...
My wife's 981S is running a 40 AH. Only thing other than stock electronics she uses a garmin catalyst. Both cars are daily driven. I would definitely recommend the Anti-gravity to anyone they have been trouble free for a year including thirteen track events so far. Nothing like removing thirty plus pounds so high up in the chassis while your in there.

 

What they said.

 

1) did you use OBD 2 scanner to register it?
Necessary?
2) Cost and model number?
3) where did you buy it?
4) did you use charger in cigarette port during installation? Necessary if OBD scanner used or not?

thanks for info in advance……

 

Nothing of the sort. I simply removed the old battery and installed the new one. Voila.

 

I didn’t use a charger in my 2019 either. Just pulled and replaced. I did have an Autel obd2 so I changed the profile to lithium.

 

I did have my Inde change my TTS with the Piwis to a lithium because of what I had read. Afterwards he told me it wasn't really necessary. Later I replaced the 981S at home with no changes or using a charger and it has been trouble free.

 

So if I understand correctly you just flipped it from old to new and off you went. Do you think if I plug my CTEK charger in while changing it would help also? I'm going to stay with AGM at this point.

 

That is correct. No charger needed.

 

Maybe things have changed, but I recall that AGM battery manufacturers were experiencing widespread quality control issues just a few years back -- that was affecting most brands (since there are only a few AGM manufacturers remaining in the industry due to consolidation.

Thats when I swapped out my AGM for an Antigravity battery...and I only regretted not doing it sooner!

After installing the Antigravity battery, my car ran so much better (I think my AGM battery had an intermittent short that caused a rough idle) and the starter cranked over so much faster/ better. I also found that the Lithium battery did not dissipate nearly as much as an AGM when sitting for extended periods (so I didn't have to keep the car on a battery tender). I also didn't have to worry about ever getting stranded and not being able to release the frunk (which is a nightmare since the hood release is electric) since the Antigravity preserves power to electronically start the car if the battery ever were to be drawn down (i.e. it will never go completely dead). Benefiting from the significant amount of weight savings was also a nice bonus!

My 991.2 battery is working fine....but when the day comes, I'll be switching over to Antigravity (it's no wonder why 992's now already come with Lithium batteries).

 

As an FYI, if you want to keep power to the system when changing a battery, for example connecting a power source to the Cars terminal Clamps so that the car stays energized and has no chance of losing its settings. Then most regular CTEK or other Chargers will not accomplish this because they have a built-in safety feature that will not send any voltage/current to the chargers clamps unless they see voltage at the clamps... this means they need to see a battery connected to their clamps before they start charging. So in effect they won't stay "on", if no battery is connected, but CTEK and others make higher-end chargers that will also have a power supply feature that can maintain voltage/current to the clamps if no battery is present. But it is easiest way if you don't have this type of charger is to use a small battery or other car battery and set of jumper cables attached to the Cars clamps it you plan on doing that.

I will say that I have changed the battery in my previous GT3RS perhaps 80 times during all the testing we did on the batteries for the first years..... and for no rhyme or reason that I could determine sometimes I would swap a battery out without any issues at all, and other times I would get the initial flags because the car realized it went to zero volts when disconnected and after the change-out had to run a little bit to relearn that a battery was in place and all was working fine before the flags went away again. So this may occur with Lead/Acid or Lithium on your change out when the disconnecting cause not voltage for the Car, but again, some have just done a direct swap and have no flags for the first time after a battery replacement..... so it does vary, but its a job you certainly can do yourself.

 

Can you use C-Tek charger with Anti-gravity batteries? If you use your car less frequently or if you go away for 3 weeks? I'm probably within a year of needing a new battery.

 

You can use a C-tek but it needs to be one that's for lithium batteries.

https://antigravitybatteries.com/pro...ek-lithium-us/