Top post to side post battery connectors
Thread Starter
Burning Brakes
Joined: Dec 2022
Posts: 1,040
Likes: 901
From: Nappytown MD
Top post to side post battery connectors
I was looking at the Antigravity website and came across these when I looked at the C5 battery. The Antigravity Lithium's are top post but these converters make it easy to use a top post battery on the C5 if you wanted or needed to with the stock terminals. That got me looking around and found some even cheaper ones on Amazon.
Top Post to Side Terminal Adapters – Antigravity Batteries
Top Post to Side Terminal Adapters – Antigravity Batteries
Navigator
Joined: Jan 2026
Posts: 9
Likes: 1
From: Texas
On a side note, what is your use-case for the lithium battery v. a standard Lead-Acid/AGM battery?
It seems to me using a lithium battery with a charging system designed to charge lead-acid/AGM batteries (in the Corvette) might not be a good idea unless you make modifications to the charging system. From what I understand lithum batteries want a lower charging voltage compared to lead-acid/AGM.
It looks like that vendor is charging a pretty penny for their product for what it is unless I am missing something, so I wonder what their special sauce is besides being in an automotive form factor.
-dtz
It seems to me using a lithium battery with a charging system designed to charge lead-acid/AGM batteries (in the Corvette) might not be a good idea unless you make modifications to the charging system. From what I understand lithum batteries want a lower charging voltage compared to lead-acid/AGM.
It looks like that vendor is charging a pretty penny for their product for what it is unless I am missing something, so I wonder what their special sauce is besides being in an automotive form factor.
-dtz
Running Guns & Moonshine
Joined: Aug 2001
Posts: 12,712
Likes: 7,325
From: CT
On a side note, what is your use-case for the lithium battery v. a standard Lead-Acid/AGM battery?
It seems to me using a lithium battery with a charging system designed to charge lead-acid/AGM batteries (in the Corvette) might not be a good idea unless you make modifications to the charging system. From what I understand lithum batteries want a lower charging voltage compared to lead-acid/AGM.
It looks like that vendor is charging a pretty penny for their product for what it is unless I am missing something, so I wonder what their special sauce is besides being in an automotive form factor.
-dtz
It seems to me using a lithium battery with a charging system designed to charge lead-acid/AGM batteries (in the Corvette) might not be a good idea unless you make modifications to the charging system. From what I understand lithum batteries want a lower charging voltage compared to lead-acid/AGM.
It looks like that vendor is charging a pretty penny for their product for what it is unless I am missing something, so I wonder what their special sauce is besides being in an automotive form factor.
-dtz
My main thing would be weight reduction by as much as 3/4.
Theh last 8 to 10 years. They have wireless safety control as an option. Shuts itself off if it discharges too far while sitting. Provides more available CCA.
Its not just a gimmick. But they do charge for the difference.
Though now that I see the name I am wondering if my coupe didn't come with one last year which may make sense why I can't for the life of me get it to charge. No clue the age of it. It was heavily depleted while the car sat for half a year. I'll have to verify.
Last edited by Tusc; Apr 28, 2026 at 11:11 AM.
Thread Starter
Burning Brakes
Joined: Dec 2022
Posts: 1,040
Likes: 901
From: Nappytown MD
I am not advocating anyone should use one, I was just checking them out for the car and wondering if the prices have come down at all. I do use them in dirt bikes for weight saving and being able to leave them for a year or over winter and come back and they are ready to go-they don't drain like traditional battery chemistry does.
All of the points Tusc brought up, so I won't repeat them. The re-start "save some juice and don't let themselves deplete completely" is a awesome feature when you are out in the bush and have an issue on a FI dirt bike. Saved my **** many times-
All of the points Tusc brought up, so I won't repeat them. The re-start "save some juice and don't let themselves deplete completely" is a awesome feature when you are out in the bush and have an issue on a FI dirt bike. Saved my **** many times-
Instructor
Joined: Jun 2025
Posts: 142
Likes: 89
Geez, where do you take your car where there isn’t a boost available if needed? On the same trails you ride your dirt bike?
triple the price to save 25 lbs. Ok, maybe for the track.
Install on a car that has a history of high parasitic draw and other electrical gremlins?
A good charger/maintainer used whenever she’s parked for a few days is a better bet. IMO. The math doesn’t work for me. Money that could be better spent elsewhere on MY car. YMMV.
triple the price to save 25 lbs. Ok, maybe for the track.
Install on a car that has a history of high parasitic draw and other electrical gremlins?
A good charger/maintainer used whenever she’s parked for a few days is a better bet. IMO. The math doesn’t work for me. Money that could be better spent elsewhere on MY car. YMMV.
Thread Starter
Burning Brakes
Joined: Dec 2022
Posts: 1,040
Likes: 901
From: Nappytown MD
Geez, where do you take your car where there isn’t a boost available if needed? On the same trails you ride your dirt bike?
I'll say it again, this post was about top to side terminals, not you should use Antigravity batteries. re-read my initial post. I find these Li batteries with a "boost" mode, VERY useful on off road vehicles when you are out with no other means of getting a jump. Not many (if any) guys carry jump cables when off roading 30 miles from no where. Space and weight are at a premium when true off roading. Some of the places in Idaho, Utah and Colorado we ride at, when we get halfway through a 60/70 mile loop on any given day, we are 30+ miles from a road or access to a jump. Not all bikes can be bumped started IF you don't have enough juice to power up the FI system and fuel pump and that is what lead me to using these on my high torque 4 stroke bikes. It can be very problematic getting bikes back to camp sometimes when you have an issue and your battery drains or it dies. Part of why I love carb'd 2 strokes w/kick starters for these kind of rides. More McGyver options that electric start FI only 4 strokes. Most modern dirtbikes don't even come with a kick starter anymore, including the 2 strokes as even they are mostly FI these days.
Instructor
Joined: Jun 2025
Posts: 142
Likes: 89
Huh? WTF does that even mean?
I'll say it again, this post was about top to side terminals, not you should use Antigravity batteries. re-read my initial post. I find these Li batteries with a "boost" mode, VERY useful on off road vehicles when you are out with no other means of getting a jump. Not many (if any) guys carry jump cables when off roading 30 miles from no where. Space and weight are at a premium when true off roading. Some of the places in Idaho, Utah and Colorado we ride at, when we get halfway through a 60/70 mile loop on any given day, we are 30+ miles from a road or access to a jump. Not all bikes can be bumped started IF you don't have enough juice to power up the FI system and fuel pump and that is what lead me to using these on my high torque 4 stroke bikes. It can be very problematic getting bikes back to camp sometimes when you have an issue and your battery drains or it dies. Part of why I love carb'd 2 strokes w/kick starters for these kind of rides. More McGyver options that electric start FI only 4 strokes. Most modern dirtbikes don't even come with a kick starter anymore, including the 2 strokes as even they are mostly FI these days.
I'll say it again, this post was about top to side terminals, not you should use Antigravity batteries. re-read my initial post. I find these Li batteries with a "boost" mode, VERY useful on off road vehicles when you are out with no other means of getting a jump. Not many (if any) guys carry jump cables when off roading 30 miles from no where. Space and weight are at a premium when true off roading. Some of the places in Idaho, Utah and Colorado we ride at, when we get halfway through a 60/70 mile loop on any given day, we are 30+ miles from a road or access to a jump. Not all bikes can be bumped started IF you don't have enough juice to power up the FI system and fuel pump and that is what lead me to using these on my high torque 4 stroke bikes. It can be very problematic getting bikes back to camp sometimes when you have an issue and your battery drains or it dies. Part of why I love carb'd 2 strokes w/kick starters for these kind of rides. More McGyver options that electric start FI only 4 strokes. Most modern dirtbikes don't even come with a kick starter anymore, including the 2 strokes as even they are mostly FI these days.
Also: " to leave them for a year or over winter and come back and they are ready to go-they don't drain like traditional battery chemistry does."
Dirt bikes have ZERO active systems when shut off. Corvettes aree using battery 24/7.
You're comparing apples to oranges. Not me. Your post made me chuckle.
Then I listed reasons why I wouldn't consider a LiOn battery for a Corvette that has a 1st generation Networked Computer management system.
Last edited by Gorn Captain; Apr 29, 2026 at 10:51 AM.
