I've used mine on quite a few 10 hour days, chatting constantly with the wife and listening to music, and never had any battery issues. The only time I've had any battery issues is when I've forgotten to turn it off after a short ride and don't get back to it for a couple of days. I also carry a supplemental USB battery that I use for whatever device runs low (Sena, phone, iPod, etc). Works great! It also has two USB ports and I've used it to charge two devices while in the hotel, while it is plugged in recharging itself.
2015 Goldwing NAV/ABS