Thats probably talking about using 4 li-ion cells though I would think?
I am going to be ticked off if the Thailand version has no issues running off 2 li-ion cells at about 8.4V and the US version is stuck at about 6V with 4 nimh cells.
Plus lithium non rechargeable cells are more like 1.7 to 1.8V fresh, that would be about 7.2V, not the 1.5V each like that manual says.
WHY make a different version like that?????
If this is the case, I will end up celling my US version once I get it and finding a Thailand version !