Frisco, either your WeatherSense has a problem or you are buying bad batteries (we’ve experienced some of this in past years). If you are buying a name brand battery I would make sure that the next one is from another store so it is not from the same shipment or batch. If you still have this problem than I would contact the Humminbird Customer Resource folks at 1-800-633-1468 and get your AS-BP looked at.
Greg Walters at Humminbird