Mine is also a 2022 model and has a 14 Ah battery. I never liked OE batteries anyway and have had more than my share of batteries in new vehicles of several kinds fail sooner than expected. Aftermarket batteries, even if the OE battery is the very same brand/model, seem to last much longer. Like ink cartridges in inkjet printers. I am watching my battery closely for any sign that it is going to fail and plan to replace with the best non-Kymco branded Yuasa battery I can find with the same dimensions. As long as it is 14 Ah or more, is 12 vdc, and has the same physical dimensions then it will work. More CCA than OE would be good as well.
My AK will last more than a week before there is any issue starting. I tested this for a week without connecting to any charger or maintainer and was still able to easily start the AK after checking the voltage shown on the dash each day. Though it did just begin to struggle just a little at the end of that week but still started. I have no worry about going on a long camping trip and being stranded but I still do take my Battery Tender Jr along for the ride anyway. Never had to use it yet. But then I usually do ride the bike somewhere at least every other day while on those trips.
But to put in perspective, I have 2 cars 2015 or newer that have the same issue after just a few weeks of sitting. And both have sat for at least 2 weeks time and ended up being unable to start after that. None have any failure or problems that can be fixed other than to disconnect the battery from the vehicle to prevent what is considered the normal phantom loads. One of those cars has the keyless start system and the other has an actual key ignition. I have had batteries die in almost all my vehicles at least once. Yeah, once again BTDT. Fortunately so far this has happened sitting in my garage and not out on the road since my vehicles usually only sit for a while in the garage. Well, maybe once while visiting family out of town but still after leaving the vehicle sit for a day or so with the battery near end of life anyway (one of the Chevy cars I owned before my current vehicles). The most modern vehicles of any kind, 2 or 4 wheeled, all have so many more electrical devices that are always-on so batteries will naturally run down faster. I took my car in to service for this issue and the mechanic told me that this was normal for modern cars. That was just last fall.
I had read online about the battery in the AK 550 running down faster than some older tech bikes/scooters so came into this prepared. That is why I insisted on a Battery Tender pigtail be installed and use a Battery Tender Jr battery maintainer (not a trickle charger or smart charger since I wanted to be able to just leave it connected without damage to the battery). I did do this with my Burgman 650 also as well as my Honda CTX1300 before that. Though I didn't always connect the Battery Tender to those unless they were going to sit for a week or more. I bought a few extra Battery Tender devices for my cars as well... one car sits for several weeks, and sometimes over a month, at a time.
It used to be just clocks using battery when the vehicle was turned off. Then clocks and radio station set points. These days it's all that plus display settings, and constantly sensing for proximity of a keyless fob and push button hatch backs/boots/trunks (my Rav4 has a tail gate that if the car is unlocked will open by pushing a button without the keyless fob being near). One of the first things I disabled on my AK was the Welcome screen/light (a setting in the Noodoe phone app) to make the AK stop constantly looking for proximity of the keyless fob... or at least reduce what was looking for it.
