I dive from january09 with a used 2003 InspirationClassic, coax re-cabled last year from APD, all perfect for 50h. From one week, using Fujtzu, Varta or other type of battery, at first dive with new battery I don't have problem, at second dive the slave started like master give NODIVE, if I start it like slave it go but in water if switch off the primary, the slave reset and show LOWBATTERY NODIVE.

Same battery on Primary doesn't have problems. It' s like under 6.2/3 volt the slave doesn't read correct voltage. Anyone has same problem?