Welcome to the CRVOC forum. Many fine folks here from around the globe.
Click on your avatar in the upper right hand corner, —> Account Settings, —> Vehicle Details. Complete for your vehicle, then hit Save. In this manner, that vital piece of information automatically appears whenever you post.
With 6 generations of the V on the road today, knowing the year & trim level of the vehicle in question helps those asking & those willing to respond.
H5 -AGM I believe is the correct size for your V. When I replaced the OEM battery in our '18 V, that is the size I purchased. [Of interest, in the 2023 Accord, the battery size is H4.]
As your OEM battery is close to 4 years in the vehicle, get your entire electrical system evaluated by an automobile electric shop - battery, alternator, etc.. As many here on the forum will attest, 4 years appears to be the age limit for OEM batteries.
What is the normal type of driving that you do with this vehicle? Many short trips, I.e. 10 miles or less, will not give the alternator much of a chance to recharge your battery.
If short trips are the norm for you, one way to insure a long battery life is to take your vehicle out for a highway run at least once a week for at least an hour at highway speeds.
Another way to insure a long battery life is to purchase & use a battery tender. Use the Search Community box located at the top of this post to find out which battery tender is recommended by forum members & how they utilize it.
Good luck. Keep us posted.