Lithium battery’s
Sorry, I should have linked this earlier since I had this same conversation 2+ years ago, Lithium-Ion - Harley Davidson Forums (hdforums.com)
1) Antigravity shows a high cranking power. But then they have a little tiny disclaimer hidden away. That says don’t use it on a high compression big motor. So in reality the only time you really need really awesome cranking power they say don’t use this battery. It’s only good for a anemic stock engines. I purchased it because whether I called a distributor or them direct, I don’t remember, they recommended that battery and said it be awesome to turn my big motor over. What a joke.
2) The warranty is pretty darn decent and they do try and take care of their clients so that’s a plus. However, they don’t know their own product. I called their warranty department. He told me I was using the wrong battery and that I needed to use the YTX – 20 for my softail. I informed the representative from antigravity that they no longer carry that battery, and that it is discontinued. He was unaware of that, but did confirm it after checking.
3) This second battery they did recommend that was also discontinued also does not have the protection circuit according to him. Upon more research I found out that’s true. However, there is a third battery and ATX – 20 but they did not recommend to me (likely didn’t know about it) that does have the protection circuit, but not the restart feature. It’s almost $400.
I’m now completely done with Antigravity, and will never revisit their products. But that’s my decision. I read reviews on many different lithium batteries and for every positive you found a negative. So my decision was to buy a super cheap one that had the protective circuit and if it only lasts six months, I really don’t care. Whether I spent $400 and hope that one last three years or I spent $90 on one last six months at the end of the day. It’s probably the same amount of use per money. Hopefully they improve and my next experience is even better. We’ll see about this $90 one.
Last edited by Rains2much; Jul 16, 2024 at 01:00 PM.
Higher cranking power and in the case of the Antigravity brand, RE-START Technology (built-in jump-starting). Advantages I like.
"1) Antigravity shows a high cranking power. But then they have a little tiny disclaimer hidden away. That says don’t use it on a high compression big motor. So in reality the only time you really need really awesome cranking power they say don’t use this battery. It’s only good for a anemic stock engines. I purchased it because whether I called a distributor or them direct, I don’t remember, they recommended that battery and said it be awesome to turn my big motor over. What a joke."
Not my experience, the one in my 10.5:1 cr 113" motor is 4 years old, spins it easily. My friend has the same battery in his 124" 12.0:1 cr FXR, it's a few months older than mine. Lithium Iron batteries need a tender designed for them, and need to be warmed up, by turning the bike on and leaving it sit for a few minutes before cranking it over, especially in colder weather. When not riding, mine is on the tender.
The Best of Harley-Davidson for Lifelong Riders

4 years! I have to say, I am pleasantly surprised. When this one ***** the bed, I will have a hard time deciding what to get. There are a lot more choices now than there were even 4 years ago.
Glad your trip went off without a hitch, my friend















