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Old 01-25-2021, 08:22 PM
  #76  
Jawnathin
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Thanks for the quick reply. Here is some info on the size and battery that came on my car.

Here is a thread discussing H5 is the size for these cars. Last reply is regarding a Spyder - https://rennlist.com/forums/gt4/1200...strictive.html

Here is a thread discussing other Spyders equipped with the same battery from OE/factory, so not just my car. Starts with post #47 - https://rennlist.com/forums/987-981-...-question.html

EDIT: Just noticed the battery in the first post of this thread from the GT4 is also the 5K0 915 105 D.


Last edited by Jawnathin; 01-26-2021 at 03:59 AM.
Old 01-25-2021, 09:08 PM
  #77  
ajw45
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Originally Posted by Jawnathin
Hello, a few questions. This is for a 2016 Boxster Spyder 981. The OE battery is part number is 5K0 915 105 D. Picture below.

Does the Spyder have the same battery incompatibilities as a 981 GT4? They use the same drivetrain but possibly different electrical systems based on the Porsche technical bulletin found on post #44.

Which size battery is needed? Using your webpage it shows H7 but other sources say H5 is the correct size.

Which AH rating is required? Does that size and rating have the updated BMS?

To install, do I just pull the old battery and put in the new one? Or do I need to maintain electricity to the car while the battery is out? If so, what’s the recommended way and do you offer that accessory?

After installation, are any other steps or programming for the car required?


For my GT4 I bought the 60ah H6 from antigravity. Just pulled out the old one, installed the new one, all settings were saved, just like swapping any other battery but lighter and no need to reconnect the vent tube. Also bought the bt battery tracker which is awesome, just works.

Best bet is to pull the cover in the frunk and verify your battery size before ordering.

Last edited by ajw45; 01-25-2021 at 09:09 PM.
Old 01-25-2021, 09:35 PM
  #78  
Jawnathin
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Originally Posted by ajw45
For my GT4 I bought the 60ah H6 from antigravity. Just pulled out the old one, installed the new one, all settings were saved, just like swapping any other battery but lighter and no need to reconnect the vent tube. Also bought the bt battery tracker which is awesome, just works.

Best bet is to pull the cover in the frunk and verify your battery size before ordering.
Thanks for the feedback, good to know it’s an easy swap.

The picture I had attached earlier is a photo of the battery in my car. Appears to be an H5 but would like confirmation from AntiGravity on the correct size, AH, and updated BMC before I make any purchasing decision. Want to avoid issues described earlier in the thread.
Old 01-26-2021, 11:51 PM
  #79  
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Originally Posted by Jawnathin
Thanks for the feedback, good to know it’s an easy swap.

The picture I had attached earlier is a photo of the battery in my car. Appears to be an H5 but would like confirmation from AntiGravity on the correct size, AH, and updated BMC before I make any purchasing decision. Want to avoid issues described earlier in the thread.
We found the 2016 Spyder has an H5, so other years may also... but oddly its not listed in our Battery Council Cross Reference booklet that our battery finder is based on. Anyway... yes you have an H5 for the SPYDER, but I would like to know if the H6 can also be fitted. I say this only because the H6 40Ah size is what we would recommend IF the Spyder has a similar charging system to the GT4. Unfortunately, we have no conclusive evidence of this being the same Charging system as the GT4, so we don't want to assume anything. But if possible that an H6 fits... (you can check if you battery tray has the optional holes for mounting the cleat 1 space further out) then that is the option we would recommend. Yes we have the H5... and in fact the GT4 has alot more electronics so the Spyder may not need the same updated BMS. But we would rather err on the side of Caution knowing that these cars all share a somewhat similar build. But let us know if you have any or concerns, we'd be glad to get you a H5 to try and if it doesn't work out swap it out. We just noted that some GT4 were having flags so we want to stay away from that until we have the updated BMS for the H5 in stock.
Old 03-10-2021, 07:48 PM
  #80  
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Originally Posted by Antigravity
Hey Law,

Chad said he spoke to you and you were using the 24Ah battery... and while we have never heard of a battery burning out a headlight or causing a ebrake to go on or off we would like to talk to you more. WE think the 24Ah will not be enough for the GT4... that is why we were suggesting the 40Ah model that has much more capacity. 24Ah if low on charge and put into sport mode is not alot of Amp Hours to run the sport mode since the car draws alot more energy in the SPORT mode. So we always suggest the 40Ah model. Anyway Chad will get you refunded or squared up your choice.
Sport mode doesn't do anything on these cars other than auto rev match and opening up the valve to the center radiator. It's not like other Porsche models where there is a change in driving behavior.

With that said, I just wanted to follow up on my post above. Chad at AntiGravity set me up with a 40AH battery with the updated BMS. Apparently, the 30AH version I ordered did not have the updated software which led to my issues. I was told otherwise when I placed my initial order but so it goes.

I just ran 3 days at COTA and didn't have any battery issues, so it appears whatever updates they've made are sufficient at least for track use. I have zero street miles on the battery so I can't vouch for that use case, but one would think 3+ hours of high RPM usage would be enough to say the issue is resolved.

Last edited by lawlence; 03-10-2021 at 08:01 PM.
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Old 03-11-2021, 07:34 PM
  #81  
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Originally Posted by lawlence
Sport mode doesn't do anything on these cars other than auto rev match and opening up the valve to the center radiator. It's not like other Porsche models where there is a change in driving behavior.

With that said, I just wanted to follow up on my post above. Chad at AntiGravity set me up with a 40AH battery with the updated BMS. Apparently, the 30AH version I ordered did not have the updated software which led to my issues. I was told otherwise when I placed my initial order but so it goes.

I just ran 3 days at COTA and didn't have any battery issues, so it appears whatever updates they've made are sufficient at least for track use. I have zero street miles on the battery so I can't vouch for that use case, but one would think 3+ hours of high RPM usage would be enough to say the issue is resolved.
Thank you so very much for the follow up information and update and glad to hear everything performed well!. Just to clarify as well, the updates are more so hardware settings in the BMS as opposed to software, just so there isn't any confusion there.
Best regards,
Chad
chad@antigravitybatteries.com
Old 03-12-2021, 04:57 PM
  #82  
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Just pulled my car out for the first time in ~6 weeks. 60ah battery showed ~78% charge left, car fired right up, so far so good.
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Old 04-01-2021, 05:21 PM
  #83  
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I can also confirm that I have had zero issues since I worked with Antigravity to exchange from the 30Ah for the 40Ah battery which has the updated firmware. There was a delay for me to make this post simply because of a mistake I made that Antigravity resolved for me as well.

No codes, battery life is excellent, no unusual draining. I can also confirm that the one incident of battery drain that I had that required the RE-START feature to be used was due to a part failure on the car draining the battery. So the RE-START feature saved me!
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Old 04-01-2021, 08:25 PM
  #84  
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Originally Posted by dmaul
I can also confirm that I have had zero issues since I worked with Antigravity to exchange from the 30Ah for the 40Ah battery which has the updated firmware. There was a delay for me to make this post simply because of a mistake I made that Antigravity resolved for me as well.

No codes, battery life is excellent, no unusual draining. I can also confirm that the one incident of battery drain that I had that required the RE-START feature to be used was due to a part failure on the car draining the battery. So the RE-START feature saved me!
Great to hear! I kept my old stock battery in the garage and left the frunk open based on some of the previous reports with issues but the antigravity 60ah unit has been great. No issues, lasts forever in storage, the battery monitor app is cool, and after 700 miles I have nothing to report, it just works.
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Old 10-29-2021, 02:52 PM
  #85  
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Question

Originally Posted by jakermc
I've been having problems since installing the Antigravity battery in my GT4 last week. I maintained power via the OBD port when the old battery was pulled but the car still fired up with a 'Steering Support Restricted' error. It would also not reset via the full lock to full lock method. I then cleared it with the PIWIS but it returned almost immediately when driving. Then cleared it with my Cobb Tuner, since I had that handy, and while the error was initially gone, it popped back on while I was idling. I did not even drive or turn the wheel. Attached is the BMS screen when that happened. Thoughts on how to cure?
Originally Posted by Antigravity
Jake, best to always call use then we can walk you through some stuff. Antigravity Batteries 310 527 2330 Open 7am to 4pm Mon-Fri....

This is a fairly rare issue but we need information and then can offer suggestion on what could be causing it. When the Cars are showing lack ot steering or Power steering issues it is based on the Voltage the Car is reading... but keep in mind the Battery Tracker showing 14.x v does not mean the Battery itself is at that voltage if you are driving... becasue the battery clamps may be charging from the Alternator but the Battery is not up to that voltage itself yet. Anyway the flags are usually 2 reasons one is the there is a lower voltage than normal or the voltage is bouncing off the upper level of its protections. But give us a call and we can look at it.
Originally Posted by jakermc
I will certainly call on Monday if I can not find a solution before then but it would also be nice to have a working car for the weekend. I also think this will help others, so posting here is important.

I just data logged voltage at the DME against engine RPM and took a short drive. The error comes on maybe 10 seconds after start-up while I am still at idle. The data looks consistent at idle (I inserted markers for the first reading so you can understand the data):

TIME OF DAY 16:26:09.0988732 VOLTAGE 14.38 RPM 800 16:26:09.8300630 14.38 800 16:26:10.1370534 14.38 800 16:26:10.2265843 14.38 800 16:26:10.3203386 14.38 800 16:26:10.8489272 14.38 800 16:26:12.1784410 14.38 800 16:26:12.6092206 14.38 800 16:21:33.8581413 14.27 672 16:21:35.5576294 14.27 672 16:21:36.6667291 14.27 672 16:21:37.3589974 14.27 672 16:21:37.6481605 14.27 640 16:21:38.0790143 14.27 672 16:21:39.2180180 14.27 672 16:21:39.4984059 14.27 672 16:21:39.6490841 14.27 640 16:21:39.9282600 14.27 672 16:21:40.3692659 14.27 672 16:21:42.2991695 14.27 640 16:21:43.2585534 14.27 672 16:21:50.1688275 14.27 672 16:21:53.1969163 14.27 672 16:21:54.0594934 14.27 704 16:21:55.2774884 14.27 832 16:21:55.9587025 14.27 832 16:21:56.2967546 14.27 800 16:21:56.4064213 14.27 800

Not sure why the error would occur at idle given these values? Min voltage during idling and the drive was 13.66, which also seems OK.

Voltage did seem high on part of the drive though:
16:24:50.2488332 VOLTAGE 15.91 RPM 3232 16:24:50.5601825 15.91 3264 16:25:35.2298440 15.7 2592 16:24:50.9030879 15.6 3328 16:24:52.4591129 15.4 3328 16:24:50.7914260 15.29 3296 16:25:00.9494870 15.29 3296 16:25:08.3198623 15.29 2848 16:25:10.2597500 15.29 2944 16:25:10.8999193 15.29 2944 16:24:52.3492249 15.19 3360 16:24:54.6802943 15.19 2976 16:25:01.0592322 15.19 3296 16:25:08.2070278 15.19 2848 16:24:50.6806794 15.09 3296 16:24:52.2415133 15.09 3424 16:24:58.1288318 15.09 3136 16:25:08.8683774 15.09 2880 16:25:09.3092965 15.09 2912 16:25:10.5676725 15.09 2944 16:25:34.0789225 15.09 2496 16:24:50.1471056 14.99 3232 16:24:50.4493730 14.99 3264 16:24:57.9671967 14.99 3104 16:25:05.6279894 14.99 3456 16:25:11.0085680 14.99 2944 16:25:19.0673283 14.99 2944 16:25:25.2492416 14.99 2720

Note, these are NOT sequential readings. I sorted the data from low to high and then high to low so these are just various points throughout the drive. While voltage seems high closing in on 16v, the error light was already on long before this happened. Again, it happens at idle.

@Antigravity, any thoughts that can help me this weekend before your customer service hours open again on Monday?
Originally Posted by Antigravity
These higher voltage that I think I'm seeing in the 15.5v range and above will trigger the protection circuitry.... it appears you have some voltage in the high 15s v and those will trigger our battery to kick in protections to knock down that voltage.... so our protections clip the voltage at a certain point which makes the car think the voltage is unsteady. So if I'm reading in your text correctly there are several times the voltage are going into the 15.7 and above range. So that is an issue for sure because that is and over-charge condition from the Car. So our battery won't allow that... then that in turn would throw flags.

"Voltage did seem high on part of the drive though:
16:24:50.2488332 VOLTAGE 15.91 RPM 3232 16:24:50.5601825 15.91 3264 16:25:35.2298440 15.7 2592 16:24:50.9030879 15.6 "


I'm sorry but we can't really do much over the week end. My only suggestion would be to try to get it a full charge, then also try driving with no accessories on..... then with all the accessories on and see if there is any change. We'll talk to you on Monday and may try swapping a battery out... but voltage in the 15.5v range and above will definitely kick on the battery's protection thus making the car think there are voltage fluctuations and throwing a flag. We have seen this in some GT4s... but certainly it not often. So we raised the limits in the BMS and that seem to repair it for most all the GT4s... But this is odd to see again. We'll want to know when you bought the battery and some other things..... So we'll talk on Monday and look at some options....
Originally Posted by jakermc
More crazy errors on the drive into work this morning. Everything was OK for about 3 miles and then I got the steering warning again. About a minute later things really got crazy, first I got a warning that the e-brake was at fault and this was quickly following by a headlight control error. These errors would then pop up in succession every minute or so. The real annoyance was every time the headlamp error was indicated by headlights would momentary flicker and flash. Other drivers must have thought I was a real a-hole! This lasted for about 3 miles and then stopped, with only the steering error remaining on the dash.

I have a call into the Antigravity help line but they are working remotely so waiting for a return call from somebody ......
Originally Posted by jakermc
About 2 hours after my initial call I spoke with a Chad calling from a MN based number. He was very nice, but did not have much to say other than asking me to send my data files which I summarized above and asked for screen shots from the Battery Tracker. He thought it would take a couple of days to get answers but would 'try to follow up before the holiday'. He seemed to hint that unless something could be done with a PIWIS the battery may not be compatible with my car. (Before I got the return call, this morning I switched over to Li battery mode with the PIWIS and it did not help).

Bottom line, the car is now undrivable until I have a chance to put the factory battery back in tomorrow. I anticipate returning the Antigravity battery and staying with the factory battery. Absent new information, my confidence is shot on the application for a GT4. I'm just glad its my own personal car and not a customer car.
Originally Posted by jakermc
We stock the H6/Group 48 size at the shop so I threw in an AC Delco we had on the shelf and drove home - ZERO issues. All error codes disappeared, no flickering headlights, and the car drove as it should. Glad nothing was permanently fried. I still need to go back into the car with the PIWIS and change back to lead acid, but all is well again.

My purchase date on the Antigravity was November 8, their latest and greatest design, so appears they have not solved compatibility issues with the GT4 yet. A real shame as I had intended to use my own car as a test mule to evaluate if this was something we wanted to recommend to customers. I will most likely send it back, though lightly considering putting it into my C4S to determine how it behaves in a more analog car. Problem is I just don't see the value of putting a $790 battery into a $30K street car, so not sure this is a great application to test.
Originally Posted by Antigravity
I can see your frustrated Jake, its a bummer for me to see, but we spoke to you and I think Chad might have expressed there is a potential that you were sent a battery without the latest BMS.... and we won't know until we get yours back. But trust us if you unhappy or scared we are going to gladly refund you and pay shipping back. I understand there has been some issues with GT4s that we have been absolutely upfront about, and we did clear the problem in most all of them with the BMS change. We now have many many many GT4s using them without issues.

Additionally, it appears you are saying you have to "go back to the Lead/Acid setting...."? Does that mean you changed the PIWIS prior to putting in the Lithium Battery? If this is so, please let us know. I always tell people NOT to set the PIWIS to Lithium setting in PIWIS. The reason being is that the Lithium setting in a Porsche PIWIS is a LOW VOLTAGE setting per the Porsche Bulletins. For example it tells the Car not to charge above 13.8v Max... which is a lower charge from the Alternator . They do this because they are expecting you to have their Porsche Lithium Battery being used in RACEING/TRACKING levels of sustained high RPMs... so by having a lower Max Charge rate there is less drag on the motor from the Alternator.... but this isn't good for daily driving where the RPMs are way lower and you do not have enough energy going towards charging the Battery.

Also please note nothing can be "fried" in your Car, I understand you frustrated, and angry but it doesn't work like that. 13v DC cannot FRY things in your Car. The fact is your car PULLS energy from the Battery... so a Battery is not a device that is PUSHING energy into any part of your vehicle, it is basically sitting there until your accessory such as a light, or or accessory DRAWS energy from it. I have to clarify this because you can frighten people by saying things like a battery is frying anything. It can't and it won't. The only way to fry anything is by reverse polarity connections, or short circuits or putting in a much higher voltage to your system. Last keep in mind the Alternator takes a Cars voltage up much higher than a Battery ever would... meaning up towards the 15v range and above.... the battery cannot do that since it will always want to go to its resting voltage of 13v no matter what... the alternator is the only thing that can make higher voltage. So just wanted to clear that up for readers.

As far as sending the battery back, nor worries we'll send you a return label if they haven't already. Then you can try what we suggest or not. These are rare problems and we are not here to force our stuff on anybody. We have massive success in the Porsche side of things. Sorry your involved with something that isn't resolved, but as I said we need to understand if it was and a previous generation BMS, and if you set you BMS to lithium prior to swapping. But we don't have to go through that either, were glad to just refund and pay shipping back to us.

Regards,
scott-
Originally Posted by jakermc
On the initial install I did NOT change anything with PIWIS. I only made the change after the initial errors in an attempt to try and solve the issue. The data I posted here and the data I emailed Chad was before any PIWIS adjustments.

Yes, I spoke with Chad and he mentioned he thought I had old stock, but he was just making an educated guess. I had to suggest to him that I give him the serial number to look up my battery and determine which BMS mine has as opposed to blindly swapping out parts. I don't want to throw more time at this if we are chasing the wrong issue. Hopefully you keep good enough records to match serial numbers up to production runs and BMS changes?

I have zero concerns about this being resolved, I know you will refund the purchase if necessary. I know you guys are good people, no worries there. But yes, it is frustrating as I've been watching your product for a very long time and waited for you to give the green light on the GT4, saying you solved the problem. So yes, I was a bit surprised to get a dud at this stage.

I distinctly said that it did NOT fry anything. And yes, I am aware of the conditions that will cause that. What I am not aware of, and quite frankly neither are you, is what is really causing the problem in my car. It could have been a short in the battery. It could have been wonky manufacturing that reverses polarity. (I have gotten a battery before with poles reversed!) It could be several things. It is also possible for issues to cause hard codes in the DME that need to be cleared with a PIWIS before normal function is restored, which can be time consuming to track down. So when my car went haywire I had no idea what I would find until a proper, functioning battery was installed. I did that and clearly stated there were no lasting issues.

If it is nothing more than the old BMS, great, but you really need to get better control over your operations. You should be logging serial numbers, knowing the production differences in each batch, and ensuring you don't send old stock out to GT4 owners. Your engineering appears to be pretty cool, but the company appears to be still learning about manufacturing and distribution best practices.
Originally Posted by Antigravity
Jake I'm just trying to resolve something with you, not get a lashing from you about how badly we suck in our operations from your perspective. It would be nice if you were to step back and try to understand a bit more about this about rather than firing off that we need to learn more in our leadership role in Lithium Products..... Maybe.... just maybe its a simple mis-hap with a reasonable potential for a mistake, which is appears to be from my perspective.

For example I spent some time talking to staff this afternoon asking ... "Could we have sent out a prior programmed version of an H6 Battery?" They said no that most all stock is the re-programmed versions. I then said "Someone is claiming he's getting tons of Flags in a GT4, yet I know others have been reporting no issues in GT4s, so what is up?" So then Chad said he just noticed the Battery is for an H6- 30Ah model..... and I said "yep that's the issue I bet...." And the reason I said that is because the H6-30Ah does NOT have a reprogrammed BMS.

So anyway we have NOT reprogrammed any of the H6 variants of the Battery for the GT4 EXCEPT for the 40Ah version of the H6 battery... And to explain this better, we have over 1500 Automotive Batteries in stock in general, and they all work fine in 99% of the Cars. so there is NO NEED to reprogram all of them because a Porsche GT4 has an issue. The GT4 was the anomaly Car for us, it was the only Car we kept seeing a problem in. So we only re-programmed ONE version of the battery to work with the GT4 since it was not necessary to do it to all the batteries... We did this specifically for the GT4, and the most common size in the Porsches we sell to which is the H6-40Ah model.

So from what it appears, you ,understandably, did not know that we did not reprogram EVERY BATTERY in our Warehouse to these other settings that work for the GT4s. And I also acknowledge that nobody else would know or consider this. But those are the facts. Usually for the GT4 it is a Rennlister atually since it not a super popular Car and they usually call us and ask about it. So we can steer them into the correct Battery. But anyway we don't even talk to 90% of the people who buy our batteries in fact. So we don't know if a guy has a GT4, a Mustang, a Civic or whatever. So the people who call use about GT4 we usually tell them what to buy, but I didn't consider most might just order not knowing this. So I see the potential for this happening.

Anyway just wanted to show you what we feel is the issue here. I'm not concerned about whatever tact you take just let us know and we'll get you the refund and shipping label or whatever you want to do.
Originally Posted by jakermc
Mishaps are when processes in place that are not followed. Poor management is when processes don't exist or the existing processes create the failure. Anyone reading your response will understand which it is here.

Please send a return shipping label. I have zero interest in running your product.
Originally Posted by ajw45
Out of curiosity can the H6 in 60ah be shipped with the latest bms or should GT4 owners just buy the 40ah model?
Originally Posted by Antigravity
Yes, the current 60Ah options only have the updated BMS as well.
Chad and Scott,
Quote by Antigravity below:

Yes, the current 60Ah options only have the updated BMS as well.
So guys, (Chad & Scott) from the on going back and forth with the Reenlist member (jakermc) that ended up having the 30ah Antigravity and it didn't have the latest BMS Up-Date.
Your stating as a fact the 60AH Antigravity Lithium batteries do have the Latest/New BMS Coding, right ???
That's the battery I'm interested in and that's why the question.
2021 Cayman 718 GT4 ..........

Note*
I stopped after I saw where the member asked about the 60AH having the Latest/New BMS coding.
Now back to finish reading the rest of the comments.

Thank,
Terry
Old 10-29-2021, 07:46 PM
  #86  
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Great you are bringing this topic up again. I read that some time back, but was never confident enough to actually order one.
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Old 10-30-2021, 12:09 PM
  #87  
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Originally Posted by tigerhonaker
Chad and Scott,
Quote by Antigravity below:


So guys, (Chad & Scott) from the on going back and forth with the Reenlist member (jakermc) that ended up having the 30ah Antigravity and it didn't have the latest BMS Up-Date.
Your stating as a fact the 60AH Antigravity Lithium batteries do have the Latest/New BMS Coding, right ???
That's the battery I'm interested in and that's why the question.
2021 Cayman 718 GT4 ..........

Note*
I stopped after I saw where the member asked about the 60AH having the Latest/New BMS coding.
Now back to finish reading the rest of the comments.

Thank,
Terry
Ok Tiger let me hope I got this right, so you are asking if the 60Ah models have the updated BMS? If I don't have it right let me know and I'll answer whatever you need to be answered. It was a long thread and I just jumped to the end.

So about the latest BMS, yet is is in all the batteries now, and in fact has been for some time since our stock has rotated out the older versions long ago. So ALL the models and especially the H6 60 have this latest BMS. I say especially the H6 60Ah becuase that model had a much lower stock and those sold out long before the 40s and 30Ah models.

I would also like to state that on ALMOST all the Circumstance where there was a flag for the Batteries was eliminated with the new BMS. But I think someone was asking about their battery throwing some flags in the last month on another thread. But I will have to ask Chad about the details and if it was an older model Battery or not. But I will say also, as I said before a few times in this thread, The GT4 was the anomaly in the Cars for us as well as a few Audis that also threw flags with the older BMS. . We had not seen this issue with the older BMS in other Car in the Porsche line-up, or in other manufactures vehicles. But what we did find was that these vehicle are very sensitive to voltage and our protections would flutter the voltage at either over-charge levels or under voltage levels. So we changed the settings to be a little less conservative and allow for Cars that had higher output voltages and that solved the issue in 99% of the Cars.

If you ask how I can say 99% off the Cars... it simply because out of selling 100 of our Auto batteries we do not really get more than one issue in at least 100 purchases. Keep in mind we do not know every Car that our Battery goes into since its just a sale, we can only track the people who call us directly and tell us what type of car they have. But in general that is my point. We rarely see the flags at all anymore. But I can't say with 100% certainty that a GT4 will not have a flag. Though in the last year it is super rare.

As always if any issues, even months later we will take our battery back and give you a full refund and paid shipping back. We stand behind our stuff and it will do what we say and if not just call us.

Last, Chad and I may be a tad delayed on answering during this upcoming week to answer some questions. Most of us from Antigravity will be at SEMA through Thursday, but should have time in the evenings to try to answer any questions. If anyone is going out there come by and say Hi. We are in two areas now... North Hall and the Overland Area.

I know this off topic, but I love this thing....This is our new rig, we'll have this in the Overland Section. We do Deep Cycle Batteries for RVs, Vans, Race Trailers, Overland Rigs and stuff.



Old 11-08-2021, 11:11 AM
  #88  
tigerhonaker
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Originally Posted by Antigravity
Ok Tiger let me hope I got this right, so you are asking if the 60Ah models have the updated BMS? If I don't have it right let me know and I'll answer whatever you need to be answered. It was a long thread and I just jumped to the end.

So about the latest BMS, yet is is in all the batteries now, and in fact has been for some time since our stock has rotated out the older versions long ago. So ALL the models and especially the H6 60 have this latest BMS. I say especially the H6 60Ah becuase that model had a much lower stock and those sold out long before the 40s and 30Ah models.

I would also like to state that on ALMOST all the Circumstance where there was a flag for the Batteries was eliminated with the new BMS. But I think someone was asking about their battery throwing some flags in the last month on another thread. But I will have to ask Chad about the details and if it was an older model Battery or not. But I will say also, as I said before a few times in this thread, The GT4 was the anomaly in the Cars for us as well as a few Audis that also threw flags with the older BMS. . We had not seen this issue with the older BMS in other Car in the Porsche line-up, or in other manufactures vehicles. But what we did find was that these vehicle are very sensitive to voltage and our protections would flutter the voltage at either over-charge levels or under voltage levels. So we changed the settings to be a little less conservative and allow for Cars that had higher output voltages and that solved the issue in 99% of the Cars.

If you ask how I can say 99% off the Cars... it simply because out of selling 100 of our Auto batteries we do not really get more than one issue in at least 100 purchases. Keep in mind we do not know every Car that our Battery goes into since its just a sale, we can only track the people who call us directly and tell us what type of car they have. But in general that is my point. We rarely see the flags at all anymore. But I can't say with 100% certainty that a GT4 will not have a flag. Though in the last year it is super rare.

As always if any issues, even months later we will take our battery back and give you a full refund and paid shipping back. We stand behind our stuff and it will do what we say and if not just call us.

Last, Chad and I may be a tad delayed on answering during this upcoming week to answer some questions. Most of us from Antigravity will be at SEMA through Thursday, but should have time in the evenings to try to answer any questions. If anyone is going out there come by and say Hi. We are in two areas now... North Hall and the Overland Area.

I know this off topic, but I love this thing....This is our new rig, we'll have this in the Overland Section. We do Deep Cycle Batteries for RVs, Vans, Race Trailers, Overland Rigs and stuff.

Scott,

I was just looking around on Rennlist and saw this now older response from you.

I don't have a clue why this internet site for some reason at times does NOT send the instant E-Mail Notice to a Subscribed Thread like this one as an example.
If I was not looking around at older Antigravity threads I would have never-ever knew you responded.

I did reach out to Chad in a PM here on Rennlist a few days ago.
Haven't heard back from him yet as he might still be doing Catch-Up after SEMA last week.

The below Thread is exactly what I would like to know Scott ..............

Also I did a new thread yesterday here on Rennlist hoping that just maybe one of the members might have some useful input.
That sadly didn't happen.
Below is that Thread title:
ANTIGRAVITY Lithium Battery H7/Group-94R "Fitment" in the Cayman/GT4 ???
https://rennlist.com/forums/gt4-spyd...l#post17771039



Scott, I also sent you an E-Mail last week if you will check your old E-Mails mine would be from tigerhonaker.
Below is the Header on that E-Mail.
October 31st Sunday:
Scott, this is tigerhonaker, Terry Honaker from Rennlist ..............

I wished I had seen your response here a lot quicker .............
So I could have commented back then but maybe you'll still see this.

Terry aka tigerhonaker
Old 11-09-2021, 11:36 AM
  #89  
Antigravity
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Hey Tiger the last 3 weeks have been super busy for us. I had to build a few new displays for SEMA while getting the Truck to the Wrap company, changing out its very big battery system to our Lithium Deep Cycle Batteries and some other stuff.... So I have been a bit behind.

This morning I got to your questions on the H7 sizes and put that in another thread. Yesterday I told staff to take care of you when they told me about you, so you should have gotten a call yesterday or will some time today. I heard you were a Vietnam Vet so we are gong to make sure your taken care of well. But for the last weeks and going into this weak we are pedal to the metal to get caught up in responses....

We had two booths at SEMA this year which made it a bit more crazy.
Old 11-09-2021, 05:17 PM
  #90  
tigerhonaker
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Originally Posted by Antigravity
Hey Tiger the last 3 weeks have been super busy for us. I had to build a few new displays for SEMA while getting the Truck to the Wrap company, changing out its very big battery system to our Lithium Deep Cycle Batteries and some other stuff.... So I have been a bit behind.

This morning I got to your questions on the H7 sizes and put that in another thread. Yesterday I told staff to take care of you when they told me about you, so you should have gotten a call yesterday or will some time today. I heard you were a Vietnam Vet so we are gong to make sure your taken care of well. But for the last weeks and going into this weak we are pedal to the metal to get caught up in responses....

We had two booths at SEMA this year which made it a bit more crazy.
Greetings guys,

Just placed my 1st order with ANTIGRAVITY today ...........

https://rennlist.com/forums/718-gts-...l#post17775367


Terry aka tigerhonaker


Quick Reply: Lithium Antigravity Battery Review



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