The panel will still produce energy on a cloudy day but cannot produce energy at night. Three to four hours of good sunlight per day is adequate to keep the battery fully charged. Solar Panels draw energy from the sun and convert this energy into electricity to recharge the battery. When choosing the solar panel that best matches the battery energizer, climatic conditions must be considered. This is due to peak sunlight hours varying during different times of the year.
Solar panels are at their maximum effectiveness during peak sunlight hours.
They do not supply a charge to the battery at night. The panel chosen must be able to provide suffient charge during the available peak sunliaht hours to keep the battery charged for at least 24 hours. Ihe average minimum sunlight hours vary greatly. Due to this variance, panels of different wattages are needed in different parts of the world. The chart below shows the recommended solar panels for the Stafix range of battery energizers.