[R 70 Judge]

Quick update: It has been a few months now and the battery has performed flawlessly. I’m very happy with the purchase. I’ve yet to even stick it on the battery tender.

I recently added the Antigravity battery tracker plus. It’s a pretty cool monitoring tool. It works through Bluetooth with an app on your phone. It continuously monitors voltage and will alert you should your voltage drop from sitting. It has a couple of testing features that monitor cranking voltage and charging voltages at idle and at cruising rpm. It also has a gps feature to see where your car is located.

It looks like this model can work with both lead acid/AGM batteries and Lithium. Seems like a great way to never get stuck in the pits with a surprise dead battery before your next round.

https://antigravitybatteries.com/pro...tooth-tracker/

[dataway]

The one I put in my ATV has been great, I basically just don't even think about it anymore, no charging in the winter, nothing, it just starts every time. And I've used it with a tow behind 45 gallon sprayer, running the pump, often with the engine off. No problems for 3 years now.

[slowbird]

Sorry, I haven’t read through entire thread, can a regular 12v alternator be used with these batteries? Are the fears of them catching fire old news?

[dataway]

Almost all the vehicle lithium batteries are Lithium Iron Phosphate, very safe compared to the Lithium Ion type batteries seen catching fire in phones etc.

Typically they are compatible with any charging system made in the last 25 years or so.

[Pigeon]

Just a side note. I replaced the 45 lb conventional battery with an antigravity ATX-30-HD in my ‘64 GTO race car. I run a 75 amp Denso alternator. Motor is a 12.5:1 compression, 4.5 inch stroke 488 and cranking compression is 210 psi. Powermaster starter. I have a 16” electric fan, A1000 fuel pump, trans cooler with electric fan and an MSD 6A ignition. Bottom line, it spins the motor like turbo! I can’t believe that little battery that weighs nothing can store enough energy to perform like that. No between rounds battery charging and after unloading at home I hooked up the charger and it topped off in no time!
PS I set a PB of 9.25 at 142.5 mph in my single 4bbl foot break GTO.

[R 70 Judge]

Originally Posted by slowbird

Sorry, I haven’t read through entire thread, can a regular 12v alternator be used with these batteries? Are the fears of them catching fire old news?

Yes, I use my regular 140 amp alternator with the Antigravity battery. No, the fire thing is definitely old news.

[R 70 Judge]

Originally Posted by Pigeon

Just a side note. I replaced the 45 lb conventional battery with an antigravity ATX-30-HD in my ‘64 GTO race car. I run a 75 amp Denso alternator. Motor is a 12.5:1 compression, 4.5 inch stroke 488 and cranking compression is 210 psi. Powermaster starter. I have a 16” electric fan, A1000 fuel pump, trans cooler with electric fan and an MSD 6A ignition. Bottom line, it spins the motor like turbo! I can’t believe that little battery that weighs nothing can store enough energy to perform like that. No between rounds battery charging and after unloading at home I hooked up the charger and it topped off in no time!
PS I set a PB of 9.25 at 142.5 mph in my single 4bbl foot break GTO.

My engine is nearly 14:1 and it spins at 325 rpm now while cranking with the new battery. It definitely helps with syncing the cam/crank sensors and keeping the EFI parts happy.

[DOC]

Originally Posted by Pigeon

Just a side note. I replaced the 45 lb conventional battery with an antigravity ATX-30-HD in my ‘64 GTO race car. I run a 75 amp Denso alternator. Motor is a 12.5:1 compression, 4.5 inch stroke 488 and cranking compression is 210 psi. Powermaster starter. I have a 16” electric fan, A1000 fuel pump, trans cooler with electric fan and an MSD 6A ignition. Bottom line, it spins the motor like turbo! I can’t believe that little battery that weighs nothing can store enough energy to perform like that. No between rounds battery charging and after unloading at home I hooked up the charger and it topped off in no time!
PS I set a PB of 9.25 at 142.5 mph in my single 4bbl foot break GTO.

I have been thinking of installing this one in a hotrod I am building for street use. Main reason is the 31 pickup with a Sbc is short on space to install. Do. You think this battery would handle electric fan, Ac , electric fuel pump, halogen lights?No stereo. Again, this will be for street/ daily driving. Will have a 100amp 10si alternator.

Plus it looks like it only weighs 5 lbs


Thanks for any advice!

[Half-Inch Stud]

Li-ion cell voltage is 3.7V
2-cell 7.4V
3-cell 11.1V
4-cell 14.8V

My 130A alternator typically shows 14.4V. Sounds safe to get a good charge.
Seems a full-charge is being avoided, so perhaps these Lead-acid car replacements are over-designed to get ( compensate ) the charge capacity.