Antigravity ATX20-HD. Heavy Duty High Performance Lithium Motorcycle and Powersport Battery, 12V 15Ah, Group 20, ATV, Quad, UTV, Jet Ski, PWC, Lawn Mower, Generator - Honda, Harley, Victory, Indian

Bought this for my 2000 HD Softail standard with a big bore kit. Bike has always been hard starting and blown a few starters since big bore; put a all balls starter in with a 400 CCA lithium battery 5 years ago which made a difference but was still straining to start. Bought the Antigravity ATX20 HD says 780 CCA but they send you the 900 CCA, fit right in my bike batt read 368 on ohm meter, after charging overnight read over 390. Turned on the gas pulled the choke hit the starter and BAM fired right up no strain no hesitation. Ohm reading 428 running, this bike has never started this easy. after riding fires right up every time. Super happy with this battery hope it last as long as my old lithium.

Needed a strong upgrade battery for a Custom Motorcycle with a high PerformanceS&S 107cu in motorDealer that had the bike had a hard time starting the bikeAfter doing my homework this battery did the trickUpgraded a regular 310ca battery toAntigravity Lithium ion 900 cold cranking amp batteryFits in the battery area perfect

I have an S&S V111 with a Balls Out starter. This bike requires a lot of battery power to crank over and start. I was going through batteries about every year for the last 8 years. I have tried AGM and Lead acid. This battery is incredible!! I can't wait to see how many years it lasts.

Works just like the OEM battery in my STR 2019 Miata, but saves a lot of weight.

I purchased the battery in November '23 and used it on my garage-kept Ironhorse V-Twin, which I use a few times a month. It started my bike quickly and worked wonderfully.But over the last month or so, it is totally discharging sitting in the garage in less than 48 hours. So much so that putting a digital charger on it, the charger won't even register the battery without putting a slight charge on it using an older slow charger. I took the bike in for service, assuming something else was causing the issue. They took 2 days to get to look at it and called, telling me they had the same issue. They told me it would be best to replace the battery.I called the support number this morning and was told to send it in, and they will decide if it needs replacing. I confirmed this may take some time with shipping and time on their end. I asked if I could buy a new one and ship the old one back and was told I could via their website, but if the old one tested ok on their end, I would receive it back, thus being on the hook for the replacement and the old one.For a battery of this cost, better customer service would be expected on a 6-month-old battery.

This battery will start my 4-stroke snowmobile when it’s -11

I purchased the battery directly from Antigravity. I also received a 900cca battery, same as another reviewer, the side of the box indicates 780cca. The battery showed 70% state of life on the first test and on the second test around 50%. Called the tech support and they told me that the 900cca is the older version of the battery and that it doesn't last as long as the 780cca.The battery was properly replaced with exactly the same battery 900cca labeled on the battery and 780cca on the box.I'm still investigating why there is discrepancy between the numbers. Also the 900cca battery sales $100 chipper than the 780cca on some websites.10/03/24 I spoke to one of the managers at Antigravity and apparently there was an error on the labeling of the batteries. The battery is 780CCA as stated on the box and not 900CCA. The new battery was produced 06/24. The 900CCA battery doesn't exist on their website.Gave 3 stars, but you can ignore the rating since I haven't use the battery, only the future use will determine my rating.

the first production car I knew of to use a Li-ion battery was the 911GT3 back in '10 as an option, for $6k ! I've been impatiently waiting since then for these to become more widely used & the prices to come down. its taken much longer than expected, but I feel its now pretty attainable & during a cyber monday deal, it was an easy decision. The price point is now not too much more than similarly sized, but much heavier AGM options, & even standard lead acid battery prices have really shot up - so the cost gap is nothing what it used to be - for something far smaller & weighing a fraction, I'm just disappointed I can't afford to put them in more of my cars.