Hi guys.... I got a DX7 transmiter but I don't undertand something, what is that line that I marked in the image????? Is that the battery charge??? what is it???? it's a combination of 2 lines (a dark and a clear one) and also it says the Volts it has.... the battery is 1,500mah... what is the maximum???? I charged the Tx for 14 hours (as the manual says) and the maximum is 10V.... and the dark line doesn't go all across the clear one. Basically i don't understand what it is and what it means, also, why is there a mark in the middle of the indicator???? what does it mean????? and....... for how long should I be able to use the Tx before having the low battery alarm????? Thanksssssss