Yes but what voltage are the batteries down too when the DMD shuts down on normal run?

I guess I will just have to buy a voltage meter and measure a battery right after a shutdown. I had thought that this work would have already been done and was common knowledge in the hobby.

I just checked a NiCd that I had just fully discharged on the work bench in my charger, like Marshalls suggestion and it reported the voltage as 5-6v which it cannot be as it was fully discharged. So this makes me think that Marshalls experience could also be something to do with the charger rather than a real reading of what the starting voltage of his battery is when plugged in to the charger.

So the search for answers goes on...but in so doing has uncovered other interesting stuff like Planedevs battery bloating and heavyaslead being able to run his DMD at a higher voltage without probs. The LiPos of course have a stated charge of 7.4v and this also does not seem to harm the DMD.

Interestingly even a battery rated at 7.2v will come out of the charger with 9v that quickly drops down to an average of around 7ish. I would bet that the Tamiya DMDs have a generous voltage tolerance range.

My transmitter starts off with a charge of 12v and then drops down from there and needs a recharge after it drops below 8v. So the Tamiya DMDs must work along similar lines.

Cheers

Alan