When the Solar light was out of power or had not power enough（Cloudy, rainy, snowy, too dusty）, it will be closed or dim(Automatic battery protection function), that's normal, Pls don't worry , it just need to be charged for some hours with enough sunshine directly and clean the solar panels. Then the light will be bright again Bright 6-10H: ZMTECH flag pole light is solar powered, it can work up to 10 hours or more after charging under a sunny day at least 3-5hours. The solar flag pole light automatically turns on at night and off during the day, your proud flag will stay bright for a long time on the darkest of nights Durable and waterproof design:Made with high-quality materials, this flag pole light is built to withstand various weather conditions. It is waterproof, ensuring that it remains functional even during rainy days or harsh outdoor environments Easy Charging:Harness the power of the sun with the solar charging feature of this flag light. Simply expose it to sunlight for 4-6 hours during the day, and it will store enough energy to illuminate your flag throughout the night.Please note that overcast or rainy weather may slightly diminish its glowing effect Fit Most Flagpoles: This solar light for flag pole outdoor, with an outer diameter of 4 inches and an inner diameter of 1 inch, is suitable for flagpoles ranging from 5 to 10 FT which one's inner diameter is 1 inch or under 1 inch. Please refer to the instruction manual to ensure that this solar light is suitable for your flagpole LETSTRY Solar Flag Pole LED Light（Black*1）