What is the reason why the fill light can't be charged?

One possibility is that there is something wrong with the charging interface. Second, the charging management circuit may be damaged. Third, rechargeable batteries may fail.

First, check whether the charging interface of the charger, charging data cable and charging lamp is normal. If all these are normal, the problem may be that the battery inside the charging lamp or the charging control circuit has failed.

Fill light lamp is a kind of lamp used to compensate some equipment or plants for lack of light. There are usually three kinds of fill light, one is camera greenhouse fill light (also called plant fill light), photography fill light (also called camera fill light) and license plate fill light (also called white light).