Originally posted by rcpanama
You might be right, but it weights only 15g and it allows me to used the car for almost 6 to 7 runs without any fear of battery failure. I have it on my Impulse Pro, in 950 and the 710.
I am sure that if I didn't have it I will also be charging the battery every 3 to 4 runs. It also gives you the information on what is the current consumption of the servos when you used each of them separate.
Well, I guess its a personal preference of yours to have the comfort of knowing these info for your cars so its fine.