Well, I am not familiar with how to check those bits, but we are scheduling time to reset this PLC unit and see if the battery light goes out. I do think it's peculiar that at times the BATT light will go out on its own and stay off for a few days. Then, one day I will walk by, and its on again. The battery I pulled out of the unit the other day reads 3.1 volts, so the battery is really not the issue (In my opinion). After leaving the new battery in the system overnight. The battery light went out. So, for now, it looks like I am OK. Peculiar!!