Low Battery indication on Wireless Flow Meter after replacement

I received a low battery notification for flow meter after about 10 months and replaced the battery. I ran the recalibration of all zones but the battery still shows low battery condition. Ok, maybe I had a bad set of batteries so I replaced them with another new set. I even allowed the system to show no flow meter available before replacing with the second set of batteries. The meter refreshed with excellent signal but still indicating low battery condition. Any thoughts on what may be issue?