I am using these to light the ramp leading to the deck and my entry door. Before mounting I exposed the solar cells directly to the bright sun for a full day. They provide a good light on low and are quite bright when exposed to motion. Even after a week of cloudy very dull days they are still charging enough to last the night which is 10+ hours now. I have a similar one from a now defunct brand that was installed in December 2016 and hope these last that long also.
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