I’ve had a Schlage encode plus since September. Used 5-6 times a day and it’s still at 87% battery so they might not be far off.I would be surprised to see it last a year if it is moving the bolt.
I've used the locks that engage and let you twist a handle to move the bolt, and those last a long time. The ones where the lock has to move the bolt do not last as long - though it is 3 months or so for 4 AA batteries.
Either way, no keyhole - no sale for me. I have had said locks choose to act up for some reason, and the key is a quick way around that when I want to save the troubleshooting for later.
My Kwikset premis on the other had would go through batteries much faster. I used rechargeable ones so they always showed “low battery”. I would just randomly charge the batteries every couple months or so if I remembered. In fact, it’s showing 0% battery right now lol. Never once got locked out.