profoto li-ion battery for b10 profoto the li-ion battery for b10 ocf flash head from profoto will give you up to 400 full-power flashes on a 90-minute charge from the 3a charger and up to 75 minutes of full power continuous light run time from the b10's led modeling light. the quick-mounting battery has charge indicators to allow power level monitoring and can be charged while in use. it's also un-certified to allow it to be brought onto a plane regardless of destination.