Before using the crosses or angels please remove the plastic covering on the top of the solar panel. When the batteries are first inserted into the item the light will sometimes come on immediately. To test the light please take it into a dark room, if the light does not come on this means the batteries will need a full charge (most of them do not come fully charged). For the batteries to fully charge the light needs to be put outside in direct sunlight with nothing blocking the solar panel. A full charge usually takes anywhere from 24 to 48 hours. The amount of time the light will burn depends on the amount of sunlight it receives and the season. During the winter months the lights will burn 3 - 4 hours and in the summer months it will burn 5 - 8 hours.