Smart Lock battery life?

I've installed two SimpliSafe smart locks and all went well. My issue is that I have one set to lock on away and unlock on off and set it daily so usually two cycles per day and then I get a low battery warning in about 3 weeks(approx 42 cycles). I've had the lock for about a month and already on second set of batteries. My other lock that I don't usually use as a everyday door as I lock and un-lock manually is fine and haven't replaced batteries yet. Has anyone had battery issues using automatic locking or unlocking?