I do all the time instead of driving a sports car in the city in bumper to bumper traffic.

I am not suffering from battery failure paranoia, and I'd worry far more about coolant pumps failing or coolant leaks. I already had the latter at very low mileage that I fixed myself. A battery failure...who cares...no big deal.

 

Installed the Interstate MTX-48 H6 today, easy. Thanks for the DIY!

My torx bolts for the air compressor holder were a different size though from the DIY tutorial (mine were T-30).

Also, the nut that goes on the bracket at the back of the firewall was a little tricky, I thought I had it tightened down but then the bracket was still loose and would have made a ton of noise. I notice the stud it goes onto it painted body color so I think it just bound up on the paint a bit and I had to keep forcing it to get tighter. Maybe used more threads than the previous battery due to width or just orientation? I don't think there was a spacer or anything on that stud but let me know if I'm mistaken.

 

Simply curious, I got my Interstate MTX-48 H6 battery from Costco and it was vented from both sides with no plug for the side that is not connected to the venting tube in the car. I had to remove the plug in the old Porsche battery and install it in the new battery to avoid venting in the frunk compartment. Did yours came with a plug?

 

@Chuck245 Vent plugs come attached to the post protector covers.

 

Mine came without covers. I guess the guy at Costco had left them on the shelf.

 

There's a venting tube in the car? I didn't see that.

But yes there is a plug that detaches on the red positive terminal cover.

 

At least on my 2013 991.1 Carrera S, there is a venting tube that routes battery vapors outside the car. It's a small black tube with an angled adaptor that plugs in the top of the battery side. If you have it, it's important that it's connected and the hole in the battery other side plugged. Battery vapors are dangerous in closed spaces.

 

And strike this: I got confused with my wife's Macan. My 911 has no vent tube, the Macan has one. Changed the two batteries mostly at the same time and mixed-up the vent stuff. Sorry for any confusion I may have created.

 

I replaced my original Banner battery today with the Duracell 12V 49 Ultra Platinum 48 (SLI49AGM) purchased from BatteriesPlus. There was a 10% off discount to buy online and pick-up in store. I did not use a tender nor did I reset the ecm. I did make it a point to keep the elapsed time between the old and new battery connection to a minimum, so I estimate that the car was without power for less than a minute. I also cleaned up the battery tray, albeit it was not that dirty. All presets were retained, and it appears that everything is functioning properly. But more importantly, engine start-up is sweet again! I was experiencing the auto stop/start gremlin as well as slow starts. And finally, there just was not enough juice this morning to get the engine started.

 

Just for fun, yes, frunk holds a 165lb person no problem.

 

Thinking about replacing my battery with an antigravity. Is it worth the cost . Are there any advantages besides the weight and it turns itself off if senses a low voltage condition.

Thanks,

 

I think the weight savings is the major benefit. The cost is the downside. For me, I only track once or twice a year, and the weight savings is not worth the cost, basis my limited driving skills.

Yet it's your choice and if you have the $$ it might be worth it to you. Value is not the lowest cost. it's what you get for your $$. Your $$ your choice......

 

In addition to the light weight, it lasts longer. 8+ years.

 

Hi everyone, just to touch on and add to what the other Rennlist members who were kind enough to respond...benefits include a weigh loss of 60-70% vs the stock lead/acid, longer lifespan(rated at 8+ years), stronger output and cranking due to the characteristics of the lithium chemistry and the full battery management system to protect against over discharge, over voltage and internal thermal sensors as well. Lastly, the BMS features the wireless ReStart feature. So if by chance the protections do kick in, you have a dedicated amount of remaining capacity with enough power to start the vehicle up a few times which can be triggered remotely with one of the included keyfobs..if the frunk is locked you can also just engage the ReStart so you have access to the battery as well.
Best regards,
Chad
chad@antigravitybatteries.com

 

I know I am jinxing it, but mine is 9 years old AGM Battery. Actually about to get a new one sometime soon.