What is the output and how long does a charge last?
1. What is the light output, either in lumens or wattage equivalent (preferred)?
2. How long does an 8-hour (wintertime) charge last?
According to the manufacturer, the light output is 50 lumens. They do not have a specification for length of run time; as that varies widely with the angle of the unit to the sun, the angle of the sun in the sky, the cleanliness of the solar panel lens, cloudy days, etc.
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