Originally Posted by
frewster
It lets you use it without for a much lighter TX. Additionally it let's you use the base as a separate power bank if you need to. I do agree that there should be another USB port for charging and data built into the TX instead of only the base.
Also a good point. Also made me curious. I got out my scale and the NB4 with battery attached is 2 oz heavier than the IT4S. The external battery is 4.8 oz, so yeah, a noticeable difference without it.
I also remembered, something I wanted to add to my whys this thing detachable comment. The possibility of dropping it when battery is not attached and getting dirt jammed in that hole in the bottom of the handle.... Now personally, I dont think I have ever dropped my radio, but I have seen my son do it lol