Yesterday, after riding about 10 minute, my motorcycle engine stop when coming to a traffic light. It can start again straight away but I need to keep the throttle going, if not the rpm will drop and the engine stop again. It is strange that it can start straight away easily, show no sign of weak battery.

When I reach home, I let the bike rest for a day and I check the battery voltage. It is 12.5v when the bike is off and 14.15v when the engine is running around 2000rpm.

Is there anything I can check before I bring it in to Harley? My motorcycle is a 2014 Dyna Street Bob with security system.