Just ordered Antigravity Lithium Battery

[Antigravity Batteries]

Received the Antigravity battery, and finally got around to installing it to see how it fits. Here are photos of the installed OEM battery, installed Antigravity battery top, and installed Antigravity battery with the shield on. As we all know the AG battery is a little taller. You can see where the shield is raised up a little bit. The hood appears to close well but I can't tell how much extra pressure (if any) is on the battery shield from the hood.

Hey Cooks thanks for Posting that up.... those pictures help to understand the clearances for me.

Can you by chance measure you exact height of the stock battery? So I can verify the exact height difference between ours and the stock battery for future reference for us. Then we can tell potential Customers is this will not rub, and work for sure.

Also, we had some race cars with tight fits on other batteries and we used to check the clearances with Plumbers Putty, or Play Dough to see how much room was left of clearance. We would just put a little ball next to the points I though were close to rubbing and close the hood or box and see how thin the putty is squished.... I just wouldn't want you to mar the paint on you underside of hood. If you find it won't work or rubs just let us know and we'll take it back and fully refund no problem.

Sponsored

 

[TopJimmyCooks]

Received the Antigravity battery, and finally got around to installing it to see how it fits. Here are photos of the installed OEM battery, installed Antigravity battery top, and installed Antigravity battery with the shield on. As we all know the AG battery is a little taller. You can see where the shield is raised up a little bit. The hood appears to close well but I can't tell how much extra pressure (if any) is on the battery shield from the hood.

So here are the notes from the install. The battery posts were sized perfectly for the OEM battery terminals. Once installed and the car first started I observed battery voltage at 14.3v. After a couple of minutes of driving it dropped to 13.8. Over the next 20 minutes it would be between 12.7, 13.3. I guess everything seems fine. Will report back with any issues.

 

[TopJimmyCooks]

Hey Cooks thanks for Posting that up.... those pictures help to understand the clearances for me.

Can you by chance measure you exact height of the stock battery? So I can verify the exact height difference between ours and the stock battery for future reference for us. Then we can tell potential Customers is this will not rub, and work for sure.

Also, we had some race cars with tight fits on other batteries and we used to check the clearances with Plumbers Putty, or Play Dough to see how much room was left of clearance. We would just put a little ball next to the points I though were close to rubbing and close the hood or box and see how thin the putty is squished.... I just wouldn't want you to mar the paint on you underside of hood. If you find it won't work or rubs just let us know and we'll take it back and fully refund no problem.

Where the battery cover shroud touches the underside of the hood looks like it is supposed to. You can see a "curb" (for lack of a better term) along the top of the shroud. The underside of the hood has rubber seal material that matches up to the "curb". So it might just be compressing the rubber a little more.

The OEM battery in the picture is 6-5/8"h

 

[Antigravity Batteries]

Where the battery cover shroud touches the underside of the hood looks like it is supposed to. You can see a "curb" (for lack of a better term) along the top of the shroud. The underside of the hood has rubber seal material that matches up to the "curb". So it might just be compressing the rubber a little more.

The OEM battery in the picture is 6-5/8"

Thanks, perfect.

 

[Antigravity Batteries]

Hi all,

Just wanted to let you know we have our updated versions of the ATX20 and ATX 30 models. So, we now offer the ATX20-HD, and the ATX30-HD for the Mustangs and similar vehicles.

But first I will go over the previous version of our Antigravity Lithium Batteries that other Mustang owners have used.

Antigravity Batteries YTX12-24 and YTX20 models. These are two very compact Lithium Batteries that have been used in many Mustangs. While these models work very well, and have a great reputation they DID NOT have the over-discharge protection feature which we are introducing with the newer models. So if a User accidentally leaves the lights, or stereo or has a some other Parasitic Drain, this can over-discharge these models. And when you over-discharge a Battery, be it a Lead/Acid or Lithium, it can be damaged or ruined. So though this is not often happening, it is a potential issue. So we wanted to develop the same performance that the YTX12-24, and YTX20 models offered, but update them with the latest Low-Voltage Cut-Offs and other protections so the Users cannot accidentally over-discharge them. So we came out with these two new models I address below...the ATX20-HD, and ATX30-HD.


Antigravity Batteries ATX20-HD, and ATX30-HD

ATX20-HD LINK https://antigravitybatteries.com/products/starter-batteries/automotive/atx20-hd/

ATX30-HD LINK https://antigravitybatteries.com/products/starter-batteries/automotive/atx30-hd/

These are the 2 NEW models we developed specifically for the Mustangs and other Performance Cars that are seeking an ultra-compact, ultra lightweight Lithium Battery for the biggest weight reduction. So these Batteries are more compact than our OEM Replacement sizes, and they DO NOT have our RE-START feature (built-in Jump Starting), but they do have a full on-board Battery Management system to prevent over-discharge of the battery, over-charge protection, also Thermal Protections, Cell Balancing. So you can't over -discharge them accidentally therefore you will have a somewhat fool proof battery that has those extra protections for ultra long life and and extra level of safety from damage. Basically its the next evolution of the YTX12-24, and the YTX20.

So the new ATX20-HD is the same size and power of Battery inside as the original YTX12-24 and YTX20 (15 Real Amp Hours), and is the same size as the original YTX20 pictured above. But the new ATX30-HD is a full Real 24 Amp Hours and offers and extra 9 Amp Hours over the ATX20-HD... which means more capacity and more power.

So overall these are the two smallest, lightest streetable Lithium Batteries you get, that offer a full BMS for protections from damaging the battery. We have been testing with 2 members of the M6G Forum Honey Badger, Sagiterria, so thanks to them for testing these new models. As well we have tested with quite a few Cars but the main issues was to make the smallest Lithium Battery we could for Streetable High Performance use, with the full built in Battery Management system. So here they are and if you interested or have questions let us know.

Yes we offer a higher priced , more feature driven OEM sized Battery and with Wireless Built-in Jump STarting.. but that is a different model. These are the ones that are at a lower price point, but offer the ultra weight reduction and stable battery Power for Race/Streetable High Performance Cars, and are the next generation of the popular YTX12-24, and YTX20. We WILL NOT be having a model as compact as the YTX12-24 available since we could not fit the circuit board inside that small of a case and still offer 15Ah. But it is still available, though we suggest against it due to its lack of modern Battery protections that the newer batteries have.

.

 

[Myshelby3425]

Hi all,

Just wanted to let you know we have our updated versions of the ATX20 and ATX 30 models. So, we now offer the ATX20-HD, and the ATX30-HD for the Mustangs and similar vehicles.

But first I will go over the previous version of our Antigravity Lithium Batteries that other Mustang owners have used.

Antigravity Batteries YTX12-24 and YTX20 models. These are two very compact Lithium Batteries that have been used in many Mustangs. While these models work very well, and have a great reputation they DID NOT have the over-discharge protection feature which we are introducing with the newer models. So if a User accidentally leaves the lights, or stereo or has a some other Parasitic Drain, this can over-discharge these models. And when you over-discharge a Battery, be it a Lead/Acid or Lithium, it can be damaged or ruined. So though this is not often happening, it is a potential issue. So we wanted to develop the same performance that the YTX12-24, and YTX20 models offered, but update them with the latest Low-Voltage Cut-Offs and other protections so the Users cannot accidentally over-discharge them. So we came out with these two new models I address below...the ATX20-HD, and ATX30-HD.


Antigravity Batteries ATX20-HD, and ATX30-HD
ATX20-HD LINK

These are the 2 NEW models we developed specifically for the Mustangs and other Performance Cars that are seeking an ultra-compact, ultra lightweight Lithium Battery for the biggest weight reduction. So these Batteries are more compact than our OEM Replactment sizes, and they DO NOT have our RE-START feature (built-in Jump Starting), but they do have a full on-board Battery Management system to prevent over-discharge of the battery, over-charge protection, also Thermal Protections, Cell Balancing. So you can't over -discharge them accidentally therefore you will have a somewhat fool proof battery that has those extra protections for ultra long life and and extra level of safety from damage. Basically its the next evolution of the YTX12-24, and the YTX20.

So the new ATX20-HD is the same size and power of Battery inside as the original YTX12-24 and YTX20 (15 Real Amp Hours), and is the same size as the original YTX20 pictured above. But the new ATX30-HD is a full Real 24 Amp Hours and offers and extra 9 Amp Hours over the ATX20-HD... which means more capacity and more power.

So overall these are the two smallest, lightest streetable Lithium Batteries you get, that offer a full BMS for protections from damaging the battery. We have been testing with 2 members of the M6G Forum Honey Badger, Sagiterria, so thanks to them for testing these new models. As well we have tested with quite a few Cars but the main issues was to make the smallest Lithium Battery we could for Streetable High Performance use, with the full built in Battery Management system. So here they are and if you interested or have questions let us know.

Yes we offer a higher priced , more feature driven OEM sized Battery and with Wireless Built-in Jump STarting.. but that is a different model. These are the ones that are at a lower price point, but offer the ultra weight reduction and stable battery Power for Race/Streetable High Performance Cars, and are the next generation of the popular YTX12-24, and YTX20. We WILL NOT be having a model as compact as the YTX12-24 available since we could not fit the circuit board inside that small of a case and still offer 15Ah. But it is still available, though we suggest against it due to its lack of modern Battery protections that the newer batteries have.

.

What would be the advantage of running the ATx-30? Are both of these suitable for daily driving? Can both run accessories like AC, Radio and Dash cam at same time?

 

[Antigravity Batteries]

What would be the advantage of running the ATx-30? Are both of these suitable for daily driving? Can both run accessories like AC, Radio and Dash cam at same time?

Good question... While they are both suitable for Daily Driving, the ATX20-HD has 15 real Amp Hours, compared to the ATX30-HD having 24 real Amp Hours. The 9Ah difference is significant for the following reasons.

1- The vehicle can sit in storage longer without the need for being put on a Charger/Maintainer. So if you are not daily driving so much and let the car sit a good few weeks or month or more... then having more Amp Hours is better. The objective is not to have to put your car on a maintainer unless you store it for longer periods.

2-Similar to above, those 9 extra Amp Hours Extra offer more capacity, so if you have a theft alarm, radar detector or Camera attached to your car the extra 9 amp Hours will power accessories like that much longer than a ATX20HD would when the car is sitting undriven. Many people do not really understand that these extra accessories can cause significant Parasitic Drain on a Battery. And being a Lithium Battery has a much lower Amp Hour rating than a Lead/Acid battery in general, these extra 9 Amp Hours give you more CAPACITY to have the Car be left without a Maintainer on it. The additional accessories that can draw energy while the car is not running can really draw down a battery quickly. And with the ATX20-HD you do not have a lot of over-head to power these things that draw energy when the Car is off. But YES both can be used as Daily Drivers with the ATX20HD being something you may want to have on a Maintainer if you have extra accessories such as the aftermarket Alarms, Cameras and such.

3- The 9 extra Amp Hours means a bigger more powerful Lithium Cell-Pack is inside the battery. Which also means a battery that weighs about 2.5 lbs more. To be clear the ATX20-HD will easily rip start the GT350s.... but the extra power with a larger battery inside offers better starting in for Colder Weather, easier turn over on Built Motors, and if you accidentally leave you lights on in a parking lot while at dinner, or your stereo or something you will have extra power to start the car, even if the voltage has dropped more.

4- The last thing is the ATX30HD is a bit more beefed up inside to handle the larger more powerful battery pack inside discharging currents. So many Race cars, or very high-performance Cars can take a lot of turn-overs to prime or start the motor. So the ATX30HD can handle the higher heat that can occur with long turn-overs or difficult to start motors. This should not be a factor in the Mustang, except for built ones or people who are tweaking on their cars more.

So in conclusion the ATX20-HD should be fine for those into racing or daily driving in Moderate weather, provided those who use it understand that a 5lbs Lithium battery is not an infinite supply of power, it is a compact, lightweight battery for Sports Cars that can handle the electronics draw of a stock vehicle without a lot of extra high-draw accessories, or big high wattage stereos. In that use it is fine. Also note that when the car is running, all your accessories are powered by the Alternator for the most part, so the battery won't be affected too much. Its just those aftermarket accessories that create larger draws and are pulling energy from the Battery when NOT driving that can make the ATX20HD not the ideal battery for that type of application with a lot of extra accessories.

ATX20-HD LINK https://antigravitybatteries.com/products/starter-batteries/automotive/atx20-hd/

ATX30-HD LINK https://antigravitybatteries.com/products/starter-batteries/automotive/atx30-hd/

 

[Myshelby3425]

Good question... While they are both suitable for Daily Driving, the ATX20-HD has 15 real Amp Hours, compared to the ATX30-HD having 24 real Amp Hours. The 9Ah difference is significant for the following reasons.

1- The vehicle can sit in storage longer without the need for being put on a Charger/Maintainer. So if you are not daily driving so much and let the car sit a good few weeks or month or more... then having more Amps Hours is better. The objective is not to have to put your car on a maintainer unless you store it for longer periods.

2-Similar to above, those 9 extra Amp Hours Extra offer more capacity, so if you have a theft alarm, radar detector or Camera attached to your car the extra 9 amp Hours will power accessories like that much longer than a ATX20HD would when the car is sitting undriven. Many people do not really understand that these extra accessories can cause significant Parasitic Drain on a Battery. And being a Lithium Battery has a much lower Amp Hour rating than a Lead/Acid battery in general, these extra 9 Amp Hours give you more CAPACITY to have the Car be left without a Maintainer on it. The additional accessories that can draw energy while the car is not running can really draw down a battery quickly. And with the ATX20-HD you do not have a lot of over-head to power these things that draw energy when the Car is off. But YES both can be used as Daily Drivers with the ATX20HD being something you may want to have on a Maintainer if you have extra accessories such as the aftermarket Alarms, Cameras and such.

3- The 9 extra Amp Hours means a bigger more powerful Lithium Cell-Pack is inside the battery. Which also means a battery that weighs about 2.5 lbs more. To be clear the ATX20-HD will easily rip start the GT350s.... but the extra power with a larger battery inside offers better starting in for Colder Weather, easier turn over on Built Motors, and if you accidentally leave you lights on in a parking lot while at dinner, or your stereo or something you will have extra power to start the car, even if the voltage has dropped more.

4- The last thing is the ATX30HD is a bit more beefed up inside to handle the larger more powerful battery pack inside discharging currents. So many Race cars, or very high-performance Cars can take a lot of turn-overs to prime or start the motor. So the ATX30HD can handle the higher heat that can occur with long turn-overs or difficult to start motors. This should not be a factor in the Mustang, except for built ones or people who are tweaking on their cars more.

So in conclusion the ATX20-HD should be fine for those into racing or daily driving in Moderate weather, provided those who use it understand that a 5lbs Lithium battery is not an infinite supply of power, it is a compact, lightweight battery for Sports Cars that can handle the electronics draw of a stock vehicle without a lot of extra high-draw accessories, or big high wattage stereos. In that use it is fine. Also note that when the car is running, all your accessories are powered by the Alternator for the most part, so the battery won't be affected too much. Its just those aftermarket accessories that create larger draws and are pulling energy from the Battery when NOT driving that can make the ATX20HD not the ideal battery for that type of application with alot of extra accessories.

ATX20-HD LINK https://antigravitybatteries.com/products/starter-batteries/automotive/atx20-hd/

ATX30-HD LINK https://antigravitybatteries.com/products/starter-batteries/automotive/atx30-hd/

Great, thanks so much for clearing that up.

I just run a dual channel dash cam only when the car is on, never leave it on in parking mode with the vehicle off. Looks like I should be ok with the ATX-20.

 

[Sagittaria]

To chime in, I've been testing the new ATX20-HD for almost two months pretty thoroughly on a 2018 GT350R. Before that, I ran the YTX20 for 4 months when the season started.

Short Story: No issues whatsoever during street duty (read not garage queen)! Highly recommend for the enthusiast crowd even for DD use. Just be mindful of running ACC too long — say over 15-20 minutes. No need to change any battery profiles. I flipped all my settings to stock and dropped it in!

This is my recommended battery for the Shelby/S550 Mustang crowd. Even more capacity and protections than the tried/tested YTX20.

Long Story:
Test Parameters:
1. Confirm drop and go
a. OEM battery profile (no messing with ForScan or any other profiles)
b. No BMS reset (you will have to wait 8 hours/overnight for the system to automatically detect the new battery)
2. Confirm 100% charging rate
3. Confirm correct voltages
4. No concerning street/daily driven performance

Above is the new ATX-20HD vs the old YTX-20 (says ATX-20). I still needed to attache the optional auto terminals to the new HD battery. On the right of that is the Antigravity Battery Tracker that acts as an always on bluetooth data logging tool. Very handy! No more popping the hood to take snapshot voltages.

Slightly different sizes.

Here it is mounted with the zip tie method. Just drop in, loosely ziptie around the OEM battery clamp, bolt in, and cinch the zip ties down. You may need to tweak the cables a little but all in all dropped in quite easy and securely. The other cables go to the Battery Tracker module I used to data log with.

Above is a screenshot of a day of logging. Nothing out of the ordinary. The resting voltage is right at 13.3v which is near as makes no difference about 100% SOC for these batteries. The charging voltages typically operate from 14.3-14v during my commutes to work. The min and max voltages I saw were 13.7-14.8v which are within the limits of the Antigravity battery.

I'd also let the battery sit for a week. The charge level dropped from 98% to 95% — which I am told is a very conservative metric. I have no concerns leaving the car sit just as long as you would with a lead brick.

So anyways there you go. Highly recommended. If you're looking to save some weight or even just in the market for a new battery here is my choice. There's a lot more benefits to lithium that I haven't covered above namely longevity and lack of your typical temperamental attitude of lead batteries. Pretty handy for me during winter storage.

 

[Myshelby3425]

To chime in, I've been testing the new ATX20-HD for almost two months pretty thoroughly on a 2018 GT350R. Before that, I ran the YTX20 for 4 months when the season started.

Short Story: No issues whatsoever during street duty (read not garage queen)! Highly recommend for the enthusiast crowd even for DD use. Just be mindful of running ACC too long — say over 15-20 minutes. No need to change any battery profiles. I flipped all my settings to stock and dropped it in!

This is my recommended battery for the Shelby/S550 Mustang crowd. Even more capacity and protections than the tried/tested YTX20.

Long Story:
Test Parameters:
1. Confirm drop and go
a. OEM battery profile (no messing with ForScan or any other profiles)
b. No BMS reset (you will have to wait 8 hours/overnight for the system to automatically detect the new battery)
2. Confirm 100% charging rate
3. Confirm correct voltages
4. No concerning street/daily driven performance

Above is the new ATX-20HD vs the old YTX-20 (says ATX-20). I still needed to attache the optional auto terminals to the new HD battery. On the right of that is the Antigravity Battery Tracker that acts as an always on bluetooth data logging tool. Very handy! No more popping the hood to take snapshot voltages.

Slightly different sizes.

Here it is mounted with the zip tie method. Just drop in, loosely ziptie around the OEM battery clamp, bolt in, and cinch the zip ties down. You may need to tweak the cables a little but all in all dropped in quite easy and securely. The other cables go to the Battery Tracker module I used to data log with.

Above is a screenshot of a day of logging. Nothing out of the ordinary. The resting voltage is right at 13.3v which is near as makes no difference about 100% SOC for these batteries. The charging voltages typically operate from 14.3-14v during my commutes to work. The min and max voltages I saw were 13.7-14.8v which are within the limits of the Antigravity battery.

I'd also let the battery sit for a week. The charge level dropped from 98% to 95% — which I am told is a very conservative metric. I have no concerns leaving the car sit just as long as you would with a lead brick.

So anyways there you go. Highly recommended. If you're looking to save some weight or even just in the market for a new battery here is my choice. There's a lot more benefits to lithium that I haven't covered above namely longevity and lack of your typical temperamental attitude of lead batteries. Pretty handy for me during winter storage.

Thanks for all this info and testing. When you say to be mindful of running ACC 15-20min. Is that with car running or with engine off? Since I will use for daily use, I’m running a dual channel dash cam, OEM radio and AC always on my daily commute.

 

[Sagittaria]

Thanks for all this info and testing. When you say to be mindful of running ACC 15-20min. Is that with car running or with engine off? Since I will use for daily use, I’m running a dual channel dash cam, OEM radio and AC always on my daily commute.

Engine off with the stereo blasting and such. There's no issue with the engine running.

I haven't tested myself exactly what run time is in ACC mode (engine off) but I am wondering if I should do that. I'll get back to everyone and see.

 

[Ixse]

So once new battery goes in, after 8hrs , it auto detects? Do you need car running for 8hrs?

Also do you have to purchase car terminal sae adapters?

 

[Demonic]

So once new battery goes in, after 8hrs , it auto detects? Do you need car running for 8hrs?

Also do you have to purchase car terminal sae adapters?

There's debating about the exact conditions required for the automatic reset in terms of number of hours and how far you have to keep your key fobs away from the battery. But eventually it will reset on its own if you let the car sit and don't have the fobs within proximity unlock range, yes.

And yes the ATX-20HD and ATX-30HD will require SAE terminals, which you can get from the Antigravity website.

 

[ldp82]

This is looking a lot less painful then I had first thought. I will be doing this come spring, nice weight drop up front!

 

[Antigravity Batteries]

For those interested we currently have some great specials going for the holiday weekend as well on the Powersports ATX20-HD and ATX30-HD options.

Sponsored