Solar-powered lights can also be charged when there is no sun, but the amount of charging will vary according to the degree of overcast and rainy days. The bulk solar lights at Anern are all equipped with battery charging and discharging devices, usually, when the sun is full, they will charge themselves. And these solar lights will rely on battery power to maintain the power supply of street lamps on rainy days. On cloudy days when the sun's light is weak, the charging capacity of solar light is relatively weak.