It must be turned off. Firstly, because the solar charging lamp is charged by sunlight, the ambient light at that time should be relatively bright, so there is no need to turn on the light switch. Second, if the light switch is turned on during charging, it will reduce the charging efficiency and even damage the lamp beads, so the light switch should be turned off. When the last switch is in the off state. This will not affect the normal charging of rechargeable batteries.
How to charge solar lights? Solar lights should be rechargeable in a sunny location. Just bask in the sun every day and turn it on day or night. Is this the solar light you're talking about? I have a solar powered flashlight. When I use it at night, it automatically presses the switch normally. Then I put it in a placeIt's sunny during the day and it will charge itself. always use an Ah charger, connect the power and charge it.