Should the switch on the solar post cap light be in the AUTO or OFF position to charge the batteries?
Your solar post cap light will need a full 8 hours of sunlight,.If your solar light has an auto/off switch it is quickest to fully charge the light in the OFF position. Once the batteries are fully charged, you can leave the switch in the ON position. The solar collector will charge the batteries during the daylight hours, and the batteries will power the light during darkness. If your light dims, try recharging the batteries again by giving the light 8-16 hours of sunlight with the switch in the OFF position.