Antigravity Batteries® ATX20-HD Heavy Duty Lithium Ion Battery with Dual Polarity and Battery Management System (BMS) - 900 CCA 5.18 Pounds 30Ah - AG-ATX20-HD

Is it expensive? Oh yeah it is. Does it weigh almost nothing? Yep! Light as a feather (I thought I got ripped off with a fake battery). Does it have enough power for my Honda Talon? More than enough!! Highly recommend.

A+ no issues

Item was in superb condition, really nicely made. Only reason why I’m giving 4 star was because after trying to get a return (didn't fit my bike) they didn’t respond for days after the delivery back to their warehouse. Had to file a claim through Amazon to get my money back.

I have been struggling over the past 15+ years to find a battery to turn over my Harley Davidson high-compression stage 3 engine. I tried everything to boost the starting ever since I increased the compression ratio with higher cams, I had the slow start syndrome. If the temperature was below 50°F, it was darn near impossible to turn over. I tried changing the starter, new spark plug wires, new ignition coil, and the newer AGM batteries... No change in the slow starting syndrome.I was pessimistic about this battery; however, with 900 CCA, two to three time more than the batteries I had in the past, I went ahead and purchased the AntiGravity battery. OMG... is all I can say. This was my dilemma all along.Now, as soon as I push the start button, the bike cranks/starts without any hesitation... I mean instantaneously.I had the battery now for 1-year and finally decided to write a review. Well worth the money.

I had high hopes for this battery and my hard crank issue on my Bourget Fat Daddy cycle. After receiving the battery I performed a proper lithium charge with my NOCO 5 charger. I installed the battery hit the starter and nothing. After speaking with AntiGravity customer service it was deemed as new bad. So I went to print a return label from Amazon. Nope no return labels. I call AntiGravity and they gave a RMA # to return the bad battery. I shipped it back for a cost of $35. They ship me a replacement battery at a higher cost then the original battery ($10 more) and did not refund my shipping expense. Just plain unprofessional. I had reached out to my customer service rep Chad twice about this. Both times he had me send him a copy of the shipping receipt and told me he would forward it to the proper department. Well no response and no refund. BUYER BEWARE!

I purchased this battery to replace a traditional lead-acid battery firing a S&S X-Wedge V-Twin (121 CI). All I can say is wow! About 1/2 the size and three times the cold cranking amps! Old battery was 300CCA and this one is 900CCA. And a big weight savings as well. I also like the LED battery test button on the top that lets you check the charge of the battery by just pressing a button. And included in the box when it arrived were two free gifts! (1) A modular flashlight with wireless speaker and power bank and (2) A knit beanie with wireless speakers built in. If you are contemplating making the change to Lithium Ion..... do it and buy this battery. You will not be disappointed.

I have not used the battery under normal conditions just yet but the four posts made installation very easy. I have several items running off the battery and the additional posts make things a lot easier. I should probably add some post extensions but adequate space is premium.UPDATE!! My bike hasn't been started since October because of a dead battery. Started the off-season project which included installing the new battery. The motorcycle started on the first attempt.

Ordered from Billet Proof Designs after they answered a few questions for me regarding the battery. I have a 2012 Wide Glide with a few mods, and always had issues with cranking power from stock batteries. No longer...this battery fires the bike no problem! Have only used a few times, so i can't speak about durability or holding charge, but love it so far.Billet Proof was super helpful in determining which battery i needed, would definitely recommend.