Possibly, the battery has a date on it, you could lift the hood and see if it’s easy to see a date. If it’s two plus years old it could be getting weak.
I’d probably get the battery tested. You don’t want to get stuck in the winter. If it’s a new used car from a dealer, I would take issue with the dealer for selling you a car with an old battery. Maybe at least they will do the labor for free to put in a new one. It takes a few minutes to put in a new battery.
You shouldn’t have a low battery warning unless maybe you left the lights on by accident while you had the car off for a bit when running into a store and on start up you had a low battery warning.
Or, if you didn’t use your car for a couple of weeks and when first starting it the battery might have been low from not using the car.
Low battery can be from an old battery, bad alternator, and now with the newer technology there can be other reasons regarding how the car reads the battery charge.