200 mW TX on a 120mAh Lipo runs about 30 mins. Total weight with Lipoly 6.2 Grams, only 3.6 Grams with a 5V regulator so it runs of the main battery. The image is not great on a single Lipo cell. I will try it connected to a spare port on the RX see what the signal is like.
With this camera you need to block out the light from the back of this camera of the PCB tracks show in the video feed. It needs a light enclosure for the whole assembly, nice and thin so it won't drag too much on top of a wing of where ever.The wires on the camera are a little fragile so I potted them in hot glue so they don't fatigue.