991.1 Battery Replacement DIY
07-22-2018, 08:11 PM
#197
weight savings - HP
Okay I have a car that was optioned as lightweight 4 way sport seats no sunroof c2s, etc. and I believe weight matters for the experience. Car and driver also recently did a spread where they shopped for the most economical performance upgrades and i's a lightweight battery !
This battery appears to be approximately a 35 pound weight savings over stock. Can one of you engineer types equate that to HP so I can justify the 1k price in my head.
This battery appears to be approximately a 35 pound weight savings over stock. Can one of you engineer types equate that to HP so I can justify the 1k price in my head.
07-22-2018, 10:14 PM
#198
Okay I have a car that was optioned as lightweight 4 way sport seats no sunroof c2s, etc. and I believe weight matters for the experience. Car and driver also recently did a spread where they shopped for the most economical performance upgrades and i's a lightweight battery !
This battery appears to be approximately a 35 pound weight savings over stock. Can one of you engineer types equate that to HP so I can justify the 1k price in my head.
This battery appears to be approximately a 35 pound weight savings over stock. Can one of you engineer types equate that to HP so I can justify the 1k price in my head.
Can you post the name of the light weight battery that saves the 35 pounds? Thanks in advance.
07-23-2018, 12:08 AM
#199
Burning Brakes
I don't know if this is what he was referring to, but the Antigravity RS-30 is 11.5 lbs. compared to regular AGM batteries that weigh close to 50 lbs. It's $699, plus you'll probably want the custom adapter plate for $179, and you'll need a Li-ion battery charger/maintainer for $56. So around $1k all in. Yes, it's expensive, but they're supposed to last 2x as long, and you save that weight that otherwise sits pretty high up just under the base of the windshield.
07-23-2018, 04:41 PM
#200
Antigravity
I was using this post on the antigravity, are the numbers incorrect (I assume their new mount weighs something (4 to 5 lbs) ??
Originally Posted by drcollie
Have you developed the 991 mount yet and is it on your website? Cost of the adapter plate? I see you have the battery for $ 700 on the website and its 11 lb. which is a huge weight savings over these 50 lb + monsters everyone is putting in.
Originally Posted by drcollie
Have you developed the 991 mount yet and is it on your website? Cost of the adapter plate? I see you have the battery for $ 700 on the website and its 11 lb. which is a huge weight savings over these 50 lb + monsters everyone is putting in.
07-23-2018, 08:47 PM
#201
Burning Brakes
I was using this post on the antigravity, are the numbers incorrect (I assume their new mount weighs something (4 to 5 lbs) ??
Originally Posted by drcollieHave you developed the 991 mount yet and is it on your website? Cost of the adapter plate? I see you have the battery for $ 700 on the website and its 11 lb. which is a huge weight savings over these 50 lb + monsters everyone is putting in.
Originally Posted by drcollie
Have you developed the 991 mount yet and is it on your website? Cost of the adapter plate? I see you have the battery for $ 700 on the website and its 11 lb. which is a huge weight savings over these 50 lb + monsters everyone is putting in.
07-23-2018, 11:02 PM
#202
Instructor
A question on Antigravity batteries.
What are the practical reasons to get the RS-30 over the ATX-30-RS?
The ATX-30-RS is lighter and cheaper, and Porsche mounting kits are available for both.
What are the practical reasons to get the RS-30 over the ATX-30-RS?
The ATX-30-RS is lighter and cheaper, and Porsche mounting kits are available for both.
07-24-2018, 02:11 AM
#203
Burning Brakes
RS also has circuitry to shut it off before going to zero to reserve enough power to start the car.
i don’t think I’d put an ATX in my car as I use it year round and DD it.
07-24-2018, 05:05 AM
#204
Instructor
Where you and I live winters are not much colder than summers.
The ATX-30-RS also has such circuitry.
07-24-2018, 03:53 PM
#205
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The RS – 30 is the battery designed for the direct replacement of an automotive battery. So it has automotive type terminals it has a sufficient amp hour for performance cars and has a more robust circuitry than a model such as the ATX – 30. The ATX – 30 has only 18 amp hours compared to the actual 30 amp hours of the RS – 30. It also requires that you buy the automotive S a E type terminal adapters for it. So the ATX 30 is recommended for track day cars not Street use cars because Street use requires more amp hours in case there's an emergency and you have to leave the emergency flashers on, and more amp hours allows for a battery that will not be overdischarged rapidly in normal street car use . So while I understand it appears to be a couple hundred dollars cheaper and it is much lighter, but the reason for that is because it has less battery less power and less amp hours nor is it as robust as the RS 30. So if you're looking at a lithium battery for Street or street and track use absolutely the RS – 30 is the proper battery, the ATX – 30 is just for if you have a track day car.
If you have any other questions let me know or email me at scott@antigravitybatteries.com
07-24-2018, 03:58 PM
#206
In regards to the ATX – 30 verse the RS – 30 there is quite a bit of difference as some of the posters above noted.
The RS – 30 is the battery designed for the direct replacement of an automotive battery. So it has automotive type terminals it has a sufficient amp hour for performance cars and has a more robust circuitry than a model such as the ATX – 30. The ATX – 30 has only 18 amp hours compared to the actual 30 amp hours of the RS – 30. It also requires that you buy the automotive S a E type terminal adapters for it. So the ATX 30 is recommended for track day cars not Street use cars because Street use requires more amp hours in case there's an emergency and you have to leave the emergency flashers on, and more amp hours allows for a battery that will not be overdischarged rapidly in normal street car use . So while I understand it appears to be a couple hundred dollars cheaper and it is much lighter, but the reason for that is because it has less battery less power and less amp hours nor is it as robust as the RS 30. So if you're looking at a lithium battery for Street or street and track use absolutely the RS – 30 is the proper battery, the ATX – 30 is just for if you have a track day car.
If you have any other questions let me know or email me at scott@antigravitybatteries.com
The RS – 30 is the battery designed for the direct replacement of an automotive battery. So it has automotive type terminals it has a sufficient amp hour for performance cars and has a more robust circuitry than a model such as the ATX – 30. The ATX – 30 has only 18 amp hours compared to the actual 30 amp hours of the RS – 30. It also requires that you buy the automotive S a E type terminal adapters for it. So the ATX 30 is recommended for track day cars not Street use cars because Street use requires more amp hours in case there's an emergency and you have to leave the emergency flashers on, and more amp hours allows for a battery that will not be overdischarged rapidly in normal street car use . So while I understand it appears to be a couple hundred dollars cheaper and it is much lighter, but the reason for that is because it has less battery less power and less amp hours nor is it as robust as the RS 30. So if you're looking at a lithium battery for Street or street and track use absolutely the RS – 30 is the proper battery, the ATX – 30 is just for if you have a track day car.
If you have any other questions let me know or email me at scott@antigravitybatteries.com
Can the RS-30 battery be use din a 911 that's a DD? or is better suited for cars that are track machines? Thanks in advance.
07-24-2018, 04:32 PM
#207
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Yes, it certainly can. The design of the RS-30 was intended for daily drivers. While there are great benefits to track use, the higher capacity allows this battery to handle the higher demands needed to run a daily driver.
07-24-2018, 04:33 PM
#208
Instructor
In regards to the ATX – 30 verse the RS – 30 there is quite a bit of difference as some of the posters above noted.
The RS – 30 is the battery designed for the direct replacement of an automotive battery. So it has automotive type terminals it has a sufficient amp hour for performance cars and has a more robust circuitry than a model such as the ATX – 30. The ATX – 30 has only 18 amp hours compared to the actual 30 amp hours of the RS – 30. It also requires that you buy the automotive S a E type terminal adapters for it. So the ATX 30 is recommended for track day cars not Street use cars because Street use requires more amp hours in case there's an emergency and you have to leave the emergency flashers on, and more amp hours allows for a battery that will not be overdischarged rapidly in normal street car use . So while I understand it appears to be a couple hundred dollars cheaper and it is much lighter, but the reason for that is because it has less battery less power and less amp hours nor is it as robust as the RS 30. So if you're looking at a lithium battery for Street or street and track use absolutely the RS – 30 is the proper battery, the ATX – 30 is just for if you have a track day car.
If you have any other questions let me know or email me at scott@antigravitybatteries.com
The RS – 30 is the battery designed for the direct replacement of an automotive battery. So it has automotive type terminals it has a sufficient amp hour for performance cars and has a more robust circuitry than a model such as the ATX – 30. The ATX – 30 has only 18 amp hours compared to the actual 30 amp hours of the RS – 30. It also requires that you buy the automotive S a E type terminal adapters for it. So the ATX 30 is recommended for track day cars not Street use cars because Street use requires more amp hours in case there's an emergency and you have to leave the emergency flashers on, and more amp hours allows for a battery that will not be overdischarged rapidly in normal street car use . So while I understand it appears to be a couple hundred dollars cheaper and it is much lighter, but the reason for that is because it has less battery less power and less amp hours nor is it as robust as the RS 30. So if you're looking at a lithium battery for Street or street and track use absolutely the RS – 30 is the proper battery, the ATX – 30 is just for if you have a track day car.
If you have any other questions let me know or email me at scott@antigravitybatteries.com
Is the RS-30 a LiFePO4 battery? Your web site makes no mention of it.
07-24-2018, 04:43 PM
#209
OK thanks - went to Amazon and the description made it seem like using lights or stereo would be an issue.
.
07-24-2018, 05:35 PM
#210
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OK thanks - went to Amazon and the description made it seem like using lights or stereo would be an issue.
https://www.amazon.com/Antigravity-B...keywords=Rs-30.
https://www.amazon.com/Antigravity-B...keywords=Rs-30.
To clarify on Stereo, lights, and other accessories, the RS-30 is not intended for high amp hour draw. Where this could possibly come into play would be with aftermarket modifications (huge stereo systems) and if you were solely using the battery to power these items but regular use in these Porsche's should not be an issue as we have a lot out there using this battery as well as in our own under regular every day driving conditions.