Lightweight battery

[Steve24]

I guarantee there is an equivalent of some kind. This style of battery is super popular at the moment.

I got a reply from antigravity suggesting that their ATX30-HD battery would work in the Emira and is available in Australia.

It’s even smaller than the one you guys have installed and would shave off around 34.5 lb compared to the original battery.

It is 48Ah, but is only 970 cranking amps.
Thoughts on whether that would really be adequate?

Presumably it would also require some work to fit firmly as it is only 165 x 125 x 172mm (L x W x H).

 

[Eagle7]

I got a reply from antigravity suggesting that their ATX30-HD battery would work in the Emira and is available in Australia.

It’s even smaller than the one you guys have installed and would shave off around 34.5 lb compared to the original battery.

It is 48Ah, but is only 970 cranking amps.
Thoughts on whether that would really be adequate?

Presumably it would also require some work to fit firmly as it is only 165 x 125 x 172mm (L x W x H).

970 is plenty; the factory battery only has 750.

The factory battery is 278 x 175 x 175mm. As far as fitment, you'd need to know how far the terminal posts are from the front edge of the battery. There has to be enough room and/or support for that terminal connector assembly that sits on the front. It's an L shaped bracket that fits over the positive battery post. It's 39mm from the center of the terminal post to the front edge of the battery. It looks like the height is good enough to allow clearance for the terminal post assembly.

I took a look at it on their website, and it would be a trick to secure it. The factory battery has ridges around the bottom which slide into the clamps to hold it down, but this battery doesn't have anything like that. Since it isn't that heavy really, you might be able to come up with something that can be 3D printed that would hold it in place. Maybe some kind of rectangle sleeve that you could slide this battery into, with ridges around the sides that extend out and match the factory clamp points. You could also have the corner of the sleeve where the positive terminal post would be, have an extension to fill in the gap between the battery and the terminal connector assembly. This would be doable with a 3D printer.

 

[Time2Fly]

For people with those installed like @Eagle7 does the tracker fit in the battery compartment with it, and is it useful?

 

[FlyNavy01]

For people with those installed like @Eagle7 does the tracker fit in the battery compartment with it, and is it useful?

Yes it's quite small. It comes with velcro tape that I used to place it on top of the battery with room to spare. Certainly not necessary, but I like data and telemetry so it's useful and gives peace of mind knowing the battery is in good health. Pretty much eliminates the small chance of ever being stranded or needing a jump.

 

[ADC]

Dumb question for those with the Antigravity T6 product... does it have a physical button on the battery case for the "re-start" feature? I'm considering options, and the reliance on a wireless fob that could get lost, or whose coin cell battery may have ironically died/leaked could undermine the value of that feature right in the moment you need to use it in anger

EDIT: I see a thing that looks like a button on top, but want to confirm.

SECOND EDIT: Despite reading the product details several times, took me until after I had exposed my doltishness on the internets to actually see the words "can also be activated manually by the Restart button on the top of the battery" . I shall leave my dumb question and self-answer here, and bear the shame in hopes that it saves somebody else from wondering later

 

[NorCalEmira]

I just received the Antigravity T-6 - 40 AH battery from GRP and I'm getting ready to install it. The panel is easy to remove and the battery clamp comes off with two bolts. Is there any trick to removing the factory harness to get access to the battery terminals? Does the battery need to be charged prior to installation?

 

[Speedy Emira]

I got a reply from antigravity suggesting that their ATX30-HD battery would work in the Emira and is available in Australia.

It’s even smaller than the one you guys have installed and would shave off around 34.5 lb compared to the original battery.

It is 48Ah, but is only 970 cranking amps.
Thoughts on whether that would really be adequate?

Presumably it would also require some work to fit firmly as it is only 165 x 125 x 172mm (L x W x H).

Looks like you have a good solution.

So it is the general thoughts that this battery is better than the one everyone has been installing up to now?

 

[Speedy Emira]

The ATX30-HD is 6-10 pounds lighter than the T6-40 & T6-60 but it does not have the restart technology:

The Antigravity ATX30-HD battery is a High Power, lightweight Lithium replacement for the YTX-30 Lead/Acid battery, as well as YIX and GYZ models. This is our HEAVY DUTY version, designed with significant Power and Capacity in this popular case size.

• YTX30 Standardized Case Size: 6.5 x 5 x 6.8 inches (LxWxH)
• 970 Cranking Amps
• 48 Amp Hours (PbEq)/ 24Ah (Actual)/ 307Wh
• 7.81 lbs
• Lighted Voltage Indicator to see state of charge (doesn’t have RE-START)
• Safest Battery Technology using full BMS and Lifepo4 Lithium chemistry
• Compatible with 5 OEM battery sizes (see below)
• Can be mounted in any orientation

I am still loving the weight and being over the cranking amps the oem battery has. It is nice to have but is the restart worth the extra weight and money. The only reason I have not already bought the T6-40 is getting around to it.

 

[Eagle7]

I just received the Antigravity T-6 - 40 AH battery from GRP and I'm getting ready to install it. The panel is easy to remove and the battery clamp comes off with two bolts. Is there any trick to removing the factory harness to get access to the battery terminals? Does the battery need to be charged prior to installation?

I charged mine before installation, just be sure you're using a charger that is for lithium batteries. The charger that's included from Lotus apparently works for both AGM and lithium. Just loosen the terminal clamps from the factory battery, and lift the clamps up. You only need to undo the front holder clamp at the bottom of the battery (I removed it completely) and the battery will slide out. Do the reverse to install the Antigravity battery.

 

[NorCalEmira]

I charged mine before installation, just be sure you're using a charger that is for lithium batteries. The charger that's included from Lotus apparently works for both AGM and lithium. Just loosen the terminal clamps from the factory battery, and lift the clamps up. You only need to undo the front holder clamp at the bottom of the battery (I removed it completely) and the battery will slide out. Do the reverse to install the Antigravity battery.

Thanks, that's helpful!

 

[crashprash]

The ATX30-HD is 6-10 pounds lighter than the T6-40 & T6-60 but it does not have the restart technology:

The Antigravity ATX30-HD battery is a High Power, lightweight Lithium replacement for the YTX-30 Lead/Acid battery, as well as YIX and GYZ models. This is our HEAVY DUTY version, designed with significant Power and Capacity in this popular case size.

• YTX30 Standardized Case Size: 6.5 x 5 x 6.8 inches (LxWxH)
• 970 Cranking Amps
• 48 Amp Hours (PbEq)/ 24Ah (Actual)/ 307Wh
• 7.81 lbs
• Lighted Voltage Indicator to see state of charge (doesn’t have RE-START)
• Safest Battery Technology using full BMS and Lifepo4 Lithium chemistry
• Compatible with 5 OEM battery sizes (see below)
• Can be mounted in any orientation

I am still loving the weight and being over the cranking amps the oem battery has. It is nice to have but is the restart worth the extra weight and money. The only reason I have not already bought the T6-40 is getting around to it.

Could you not use something like this to jump start it if needed and enjoy the weight savings instead?

 

[Time2Fly]

Can someone talk me though swapping the battery?

 

[Blackthought_]

Can someone talk me though swapping the battery?

It’s super simple to just disconnect the old battery, disconnect the old battery and slide in the new one. The hardest part for me was to trim down that black cover piece to fit the pig tails of the new charging cable

 

[hugopanec]

The ATX30-HD is 6-10 pounds lighter than the T6-40 & T6-60 but it does not have the restart technology:

The Antigravity ATX30-HD battery is a High Power, lightweight Lithium replacement for the YTX-30 Lead/Acid battery, as well as YIX and GYZ models. This is our HEAVY DUTY version, designed with significant Power and Capacity in this popular case size.

• YTX30 Standardized Case Size: 6.5 x 5 x 6.8 inches (LxWxH)
• 970 Cranking Amps
• 48 Amp Hours (PbEq)/ 24Ah (Actual)/ 307Wh
• 7.81 lbs
• Lighted Voltage Indicator to see state of charge (doesn’t have RE-START)
• Safest Battery Technology using full BMS and Lifepo4 Lithium chemistry
• Compatible with 5 OEM battery sizes (see below)
• Can be mounted in any orientation

I am still loving the weight and being over the cranking amps the oem battery has. It is nice to have but is the restart worth the extra weight and money. The only reason I have not already bought the T6-40 is getting around to it.

Would this ATX30-HD fit in the Emira? The battery proportions look different.

Thank you!

 

[Speedy Emira]

Would this ATX30-HD fit in the Emira? The battery proportions look different.

Thank you!

It would fit but I am not sure if you need a new tray. I would get one yesterday if I knew for sure someone had fitted one.

 

[hellasf1]

Has anyone charged their antigravity with the lotus battery charger?

 

[NorCalEmira]

Yes, works just fine

 

[Blackthought_]

Yes, works just fine

You use the lotus battery charger with the antigravity battery? Isn’t the lotus charger made for lead acid batteries only? You absolutely need a separate lithium battery tender for the antigravity battery

 

[Eagle7]

You use the lotus battery charger with the antigravity battery? Isn’t the lotus charger made for lead acid batteries only? You absolutely need a separate lithium battery tender for the antigravity battery

The Lotus charger I got says it works with both AGM and Lithium.

 

[NorCalEmira]

You use the lotus battery charger with the antigravity battery? Isn’t the lotus charger made for lead acid batteries only? You absolutely need a separate lithium battery tender for the antigravity battery

The Lotus charger works with both. I use it to charge a 40ah Antigravity battery without issue.