1, easy to carry. Although ordinary external batteries can meet the needs of daily shooting, they have a disadvantage that they are inconvenient to carry. The built-in battery is not only convenient to carry, but also can be used with you, and it can fill the light anytime and anywhere.

2, convenient charging. The camera glow stick with built-in battery is dead, so it can be charged with charging treasure anytime and anywhere, but it can't be connected with external power supply, and some of them need to be connected with power supply all the time, which is too limited.