I think he was talking about Micro MinimOSD. I has a Batt 1 and a Batt 2 pin. In the setup if you want to display Batt A voltage, then connect battery voltage to Batt 1 pin on the board, the voltage counts down to zero just after boot. If you remove power from Batt 1 pin and attach it to Batt 2 pin, without changing anything in the display setup, it will display correctly. Don't know why this is, but I have read about several people having this problem.