What is the unstable output of overhead flash?

Battery aging. The 18650 lithium battery used in the flash of the set-top box will age during use, resulting in unstable power supply for the flash. Replacing the battery can solve the problem of battery aging. The dual-purpose flash for outdoor shooting at the top of the machine is different from the ordinary hot shoe flash. The size of the fuselage is similar to that of ordinary hot shoe flash, but the flash intensity can be 2 to 6 times higher. Light effect accessories are practical and complete, light and portable. It is the absolute main flash for outdoor shooting and the ideal flash for freelance photographers, journalists, documentary photographers and senior enthusiasts.