Please note - I am not a mechanic or expert in anything.
It doesn't really matter when you read this as the battery and its condition and state of charge is always important especially with modern cars with all the electrical items and systems on them.
But at time of writing the days are getting shorter and darker and colder so you will need the car battery to be in good condition and connection and in a good state of charge to get you through without what can be a lot of hassle and inconvenience if you let the battery get too low, or fail altogether.
Letting the battery get too low can cause all sorts of problems and some of them very unexpected, many people will think that because the car starts and the lights seem bright enough that the battery must be fine and well charged but this might not be the case.
Now is a good time to check your battery - that both battery terminal post clamps are tightly secure (and battery securely clamped to the car), that there's no spillage or mess on the top of the battery and that the battery has a good level of charge in it.
You may want to consider an appropriate battery charger, not a very fast or booster charger though, to keep your battery well charged and not be caught out with low charge problems and/or your use of the car's electrical items especially when the engine , so alternator, aren't running .
This may also perhaps save you being caught out and being one of the very many that need to call out the breakdown services because the battery is flat, the AA number one most common cause of breakdowns - Flat or faulty battery. The AA won't say this but I will, very rarely is it a faulty battery, a few might be charging system faults but the vast majority will be user error, ignorance or neglect. Remember prevention is better than cure.
From AA website -
1. Flat or faulty battery
Battery faults are the most common cause of breakdowns – especially in the winter.
If you’ve got a problem with your battery, you might not be able to start your car. A car's battery powers the starter motor, and then the engine turns the alternator, which recharges the battery.
Flat batteries are commonly caused by leaving the lights on when the engine's off. But there’s also a good chance battery problems will be down to lots of short journeys or a poor electrical connection.
Batteries can go flat due to:
Leaving your car unused for a while, or only used for short journeys
A faulty component
A problem with the car's charging system
A fault with the battery itself
Old age
How to avoid a flat battery
Don't forget to switch everything off as you leave the car. Removing the ignition key may not switch off the lights, but most modern cars have a 'lights on' warning sound as you open the car door.
If you don’t make long journeys very often, your battery won’t have much chance to charge. You can sort this out by charging it overnight every 2 weeks or so.
https://www.theaa.com/breakdown-cover/advice/top-ten-breakdown-causes
HTH.