I checked the battery level from my 830 of the UT800 before I started out on my pre-sunrise and reported ~50% charge. 30min into the ride, the light goes dead. I couldn't turn it back on, so I assumed the battery was exhausted. The control is set to auto which seems to run in a night flash mode. Is it plausible that 50% charge will die in 30min? Is there a low battery warning (I may have missed it if there is)?
