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Old 11-04-2021, 09:52 PM   #1
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Antigravity Lithium RV Batteries

Anybody using them? They are supposed to be plug and play. Iíve got a 2014 23D Serenity and they are supposed to be drop in to my battery box w no cutting.
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Old 11-05-2021, 07:41 AM   #2
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According to their site, the battery group sizes are direct drop in. Never used them and never heard of them before today.

Question is, will the factory installed converter in the trailer be able to correctly charge it properly, my guess is no, but from what they state on the site, it's drop in at least in terms of physical dimensions...add a simple converter swap and you'd be off to the races.

https://antigravitybatteries.com/pro...tive/ag-27-rs/
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Old 11-05-2021, 07:47 AM   #3
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It looks like these batteries are intended for automotive use. Only 40 and 60 Ahs. And, they talk about cranking amps. I would talk to the manufacturer before buying for your trailer.
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Old 11-05-2021, 08:15 AM   #4
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They do make a deep cycle battery, but I'm not sure that it will fit in place of what's found in most Airstream trailers.
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Old 11-05-2021, 08:54 AM   #5
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I did not know the anti gravity system needed a battery. Maybe that is why mine is not working.
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Old 11-05-2021, 09:19 AM   #6
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Not sure these are ideal specs for powering the trailer, but to the extent there is any truth in advertising they might help with payload.
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Old 11-05-2021, 10:24 AM   #7
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There are "less expensive" and perhaps "better" alternatives for RVs out there check out Will Powers on YouTube who spends his life's goal testing these batteries. While I installed SOK's inside for $520 there are drop'ins as well that are "proven" for less then the antigravity. Besides - if I was to spend 0ver $900 I would go BattleBorn - just saying.
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Old 11-05-2021, 10:28 AM   #8
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Quote:
Originally Posted by Bill M. View Post
I did not know the anti gravity system needed a battery. Maybe that is why mine is not working.
It could be the molecular clutch or the glime ignitor?
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Old 11-05-2021, 10:48 AM   #9
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I read with interest the battery discussions and being in the boat business, batteries are very important. However, for 30 years of owning Airstreams I have always used the best conventional batteries for a fraction of what some people are spending now and I have had great luck with performance.
I think when I switched to all LED lighting, I have never had a problem with underperforming batteries. We boondock occasionally and have a 2200 Honda that handles any charging needs.
I am sure I will upgrade at some point but right now, I'm just not ready to spend a thousand dollars for batteries.
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Old 11-05-2021, 11:32 AM   #10
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I have seen the Anti Gravity brand batteries for motorcycle and powersport applications but not for RVs. Anyway I bought 2 Lion Safari batteries from Costco, coupled with the 180 watt solar already on my trailer they perform very well. I did a plug & play installation, making sure the solar controller is set to AGM as it does not have lithium setting.

On a recent trip with no hookups, lows in the upper 30s running the furnace @ 68 I would check the voltage each morning and see 12.9 to 13.1 volts - had a long rain day with no sun so the batteries ran the heat 2 nights with no charge - still had 12.9 . My original AGMs would be nearly spent running furnace over night.
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Old 11-05-2021, 11:34 AM   #11
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Originally Posted by m rafferty View Post
I read with interest the battery discussions and being in the boat business, batteries are very important. However, for 30 years of owning Airstreams I have always used the best conventional batteries for a fraction of what some people are spending now and I have had great luck with performance.
I think when I switched to all LED lighting, I have never had a problem with underperforming batteries. We boondock occasionally and have a 2200 Honda that handles any charging needs.
I am sure I will upgrade at some point but right now, I'm just not ready to spend a thousand dollars for batteries.
For trailers of our vintage, you are spot on, however, new trailers coming off the factory floor being delivered to customers have much higher power demands.

The Classic has the most electronics in it, but even that isn't the 800lb ape in the room.....that is the 12v compressor fridge. The best conventional batteries might last a day, maybe two before they are depleted and they cannot be fully discharged without shortening it's life. Lithium batteries on the other hand, can be darn near full discharged without shortening the life and in many cases have equal or greater capacity than conventional lead acid type designs. Is the added cost justifiable? Really depends on the owner's lifestyle.

So although I agree with you fully, based on our situation with LP fridges and far less electronics, new owners of rigs starting across the trailer line for the 2022 model year and some that started to get the 12v compressor fridges in 2021 model year need more amp hours, much further discharge ability and some way to keep them charged (solar, generator, etc). Whole different beast IMHO.
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Old 11-05-2021, 01:12 PM   #12
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I had an Antigravity lithium battery in my Porsche street/track car. Much lighter than stock, obviously, and the built in bluetooth monitoring system was very useful. It also came with a remote control for activating the reserve power feature which could start the car if the main battery was exhausted. From my experience, the quality was good.

It appears they make a deep cycle 100Ah model which is priced more or less competitively and would be suitable for RV use assuming that it fits. I'm not offering an opinion on whether Antigravity would be the best choice (I have Battleborns in my Airstream) but they could be a legitimate option.

https://antigravitybatteries.com/pro...age/dc-100-v1/
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Old 11-05-2021, 01:28 PM   #13
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Quote:
Originally Posted by Bill M. View Post
I did not know the anti gravity system needed a battery. Maybe that is why mine is not working.
It's obviously how they keep the weight down.
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Old 11-06-2021, 06:35 AM   #14
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I have used the Anti Gravity batteries in Harley motorcycles with very good experience so far. Way lighter than lead acid and much less temperature sensitivity than the Harley lithium which I also used. I may put a set of these in my AS 27 FBT next season. Probably will need to swap converter???
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Old 11-08-2021, 04:25 PM   #15
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It could be the molecular clutch or the glime ignitor?
or the flux capacitor?
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Old 11-18-2021, 01:04 PM   #16
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Quote:
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or the flux capacitor?


You guys r so funnyÖÖ
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Old 11-26-2021, 03:26 PM   #17
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Went with Renogy for the batteries due to only lithium that would fit in old style battery box.
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Old 11-27-2021, 08:00 AM   #18
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Went with Renogy for the batteries due to only lithium that would fit in old style battery box.
Just curious. What did you do for the rest of the system? (Converter, etc). I believe your 2014 has a single stage converter (charger) and certainly not optimized for LiFePO4 batteries.
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Old 11-27-2021, 10:21 PM   #19
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Contacted Parallax and purchased their modification to support lithiums. Turns out it takes the same part as the WFCO.
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