The C4Pro is the best helmet/coms combination I've used. Again I charge a battery on the move in my topbox but never needed to swap it out on a day ride. It's there in case I have a multiday ride without chance to charge overnight. An in helmet system that works really well.
You'd think some one who makes stuff for motorcyclist would ask them what worked and what they wanted instead of just producing what suits them - this just doesn't apply to head sets its jus about everything i struggle to find stuff that isn't duff in some way ok rant over i feel better now.