Bought this as the biggest Lithium that would fit my KTM 1290GT.
They say its a "20", but thats with the spacers. It physically fits a YTX14BS and is therefore a perfect fit (without the spacers). It has plenty of CCA to get the bike started even on coldest mornings.
Had issues with other batteries, hopefully this one lasts longer .. it certainly sounds more powerful when cranking. I do let the battery "warm up" by turning on ignition first (which turns on headlight and aux lights on my bike). I then get my gear on and then start the bike 30-60 secs later. I believe this is best practice for Lithium batteries and hopefully it will keep it strong for years to come.