My bike is less than a year old, and the battery seems tired. Grrrr. Another consumable part fails prematurely that I'm certain KTM won't cover, just like my left front rotor that warped at 2k miles and ruined a pad. Got a nice bill for that one...

These seem to be gaining popularity right now: NEW! RE-START LITHIUM BATTERIES – Antigravity Batteries

I've had a Braille lithium battery in my race car for a number of years and I love it. I think it's great that they're coming to bikes as you save a little weight while having a more powerful, reliable battery. This one has a reserve jump start reature too.

Thoughts?
Any idea what the largest battery I can fit in there is?

The ATX-12 that AntiGravity’s battery finder recommend was way too tall for the compartment in my 2017 SDGT. Went with the ATZ-10 and have been happy with it. I had a Shorai LFX19A4-BS12 as a replacement initially for my stock battery, but found it just didn’t have the cranking amps for temps below 10-15°C.


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The ATX-12 that AntiGravity’s battery finder recommend was way too tall for the compartment in my 2017 SDGT. Went with the ATZ-10 and have been happy with it. I had a Shorai LFX19A4-BS12 as a replacement initially for my stock battery, but found it just didn’t have the cranking amps for temps below 10-15°C.


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Yes, same for my Shorai. Although a big twin with as many electronics as this one will always require a lot of cranking amps, the Shorai does come up short at cold temperatures. Even when you preheat the battery with high beams on for two minutes, it still really struggles to get the engine moving, even when cranking for over a minute. It even sounds like it's dying at times. I might replace mine at some point because of that. It's been in there for two winters and it had a few really hard starts since then. Can't be good. Having said that, it starts up effortlessly in warm weather.

 

I had an Antigravity battery in my R1 and had some odd issues with it. Might have just been a fluke. I got an EarthX, as it was heavily recommended on the forum, and never had problems. When my Duke's OEM battery is showing "signs," I think I'll nab another EarthX.

 

Thanks for the feedback. Any idea what the dimensions are on the stock battery in a 19 model? I've tried googling to find the stock battery so I can get the dimensions, but haven't had much luck.

 

Any idea what the dimensions are on the stock battery in a 19 model?

19 model what? R or GT, as they're very different batteries.

 

will personally second that earthx, cranks like nuthin else ... pricey but you're worth it.

 

DeputyDog95~ The last Shorai battery I had (which I subsequently sold with the bike) provided 5 years of service. The Shorai in "The Beast" is going on 6 years and hasn't had any issues. For reference, Shorai offers a pro-rated limited five-year warranty for LFX batteries so that's beneficial should an issue occur. That said, a lithium battery is a nice upgrade in the weight savings department.

 

Anyone using these batteries in the wintry world? Detroit here. Always heard you had to baby them a bit. Do you bring them in all winter? I kept my previous bike (standard battery) on a tender, but didn't bring the battery inside in the winter.

 

Owner’s manual should list the Yuasa model.


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Found it. Page 253 for anyone who's looking.

https://www.ktmshop.se/documents/19_3213929_en_OM.pdf

The model is: YTZ14S

Here's a link to the stock battery and the specs for anyone that may need them: https://www.yuasabatteries.com/battery/ytz14s/

Thanks for the assistance, folks.

One last question...

As long as I find a battery that has identical or slightly smaller dimensions to the stock battery, it should drop right in, correct?

 

The ATZ10 seems like the closest fit, at least for a 19 GT.

ATZ10-RS Lithium Motorsports Battery

Hi-Power lightweight ATZ10 lithium motorcycle/powersports battery with RE-START Technology (built-in jump-starting). Replace YTZ10S, YTX9, more. 360 CA

antigravitybatteries.com

The dimensions are as follows:

ATZ10: 5.9 x 3.46 x 3.62 inches (LxWxH)
Stock: 6 in. x 3 7⁄16 in. x 4 3⁄8 in. (https://www.yuasabatteries.com/battery/ytz14s/)

The stock has 230 CCA and the Anti-G battery has 360.

The Anti-G is a little shorter with length, and a little shorter with height.

The width is really close when you convert it with the Anti G probably being a mm wider. Not sure being that close would even matter.

7⁄16”

0.4375

I "think" this Anti-G model should drop right in.

 

So, I've looked at Anti-Gravity and Earth X, or at least the ones that fit.

ATZ10-RS Lithium Motorsports Battery

Hi-Power lightweight ATZ10 lithium motorcycle/powersports battery with RE-START Technology (built-in jump-starting). Replace YTZ10S, YTX9, more. 360 CA

antigravitybatteries.com

ETX24C EarthX Motorcycle Lithium Battery Replacment!

This ETX24C EarthX lithium battery has 420 PCA, 2.6 pounds, and a complete Battery Managment System for your power sport vehicle!

earthxbatteries.com

The EarthX is a little more expensive, but has 270 CCA versus 360 CCA in the Anti-Gravity.

Do you think either of these will work fine based on their specs? Enough to consistently start the bike and run things like heated grips/seat/aux lights, etc?

 

I had an anti-gravity on my last bike, a Triumph Street Twin. Hated it for two reasons. I rode 2500 miles to and from North Carolina last November in mostly 35 degree weather during the day. I had a lot of trouble getting going in the morning, even after warming the battery up by running the lights for a while. One day I had to jump it, which isn't good for a lithium battery. Secondly, the Restart works but, in that bike at least, you have to basically take half the bike apart to get to it. Anti-Gravity had promised a remote, but that turned into vaporware. I'm sticking with AGM for cold weather, and if I were to get a lithium I'd look elsewhere.

 

Do you think the cold weather starts were an Anti-Gravity issue, or simply a lithium battery issue? You're a brave man... I avoid riding if it's less than 60 degrees

 

For anyone that is interesting...

This battery seems to be a direct replacment, offers more CCA, and has the jump start tech.

They're running a 15% off black friday code. It's listed on the top of the page:

ATZ10-RS Lithium Motorsports Battery

Hi-Power lightweight ATZ10 lithium motorcycle/powersports battery with RE-START Technology (built-in jump-starting). Replace YTZ10S, YTX9, more. 360 CA

antigravitybatteries.com

I ordered one for myself this morning, and one of their jump start packs as well.

 

I am a Anti Gravity fan Triumph Tiger 1050, 790 Duke, 501 FE Husqvarna, good cold weather starting Michigan, weight saving from the 790 Duke OEM battery was substancial. Had bad luck with shorai lithium but that was a few years ago maybe better now from the reviews. Also some Anti gravity made in USA if that matters to you.

 

FWIW, Western Power Sports has a Li battery that they sell that has performed better for me than Shorais. It can be charged with a Battery Tender instead of a dedicated charger.

 

Thanks for the feedback. My stock battery is less than a year old, and is already dipping well below 12 volts on cold starts. I could probably get the battery warrantied to some degre


That's interesting. Typically a lithium battery requires a specific tender as they behave differently under charging. I wonder how they get that to work without damaging the battery.

 

I don't know but they cost less, have good cca, and any parts guy with a Western Power Sports catalog can order one. BTW-every motorcycle shop I've ever been in had a WPS catalog. I've run this battery on two bikes for several years without issue. The GT runs fine with it so far. They even seem to start better in winter as well. They even have a button you can press to see how charged they are. These are really under the radar and from what I've seen, they're good!

 

If I hadn't already ordered an AntiGravity battery, I would have definitely considered that. Sounds like a great alternative.

 

And if I had learned about AntiGravity batteries first I would have tried them out too! I am really curious how you will get along with that battery. They seem really nice.