Upon the recommendation of a Silicon Solar Customer Sales representative regarding my need for a flagpole floodlight, I purchase one Silicon Solar Commercial Sign Light (SKU: 16135) on January 31, 2008. The light was subsequently mounted on my flagpole and worked just fine following occasional sunny days throughout February and March. However, beginning sometime in April the battery began having difficulty accomplishing a full charge following total sunny days. E.g., the floodlight stayed light for only 4 or 5 hours, instead of the 10 hour... read full review »