Can the Brightown HLS-W-XXXWW-S be charged without sunlight?
Yes, the light features USB connectivity that enables backup charging in the event of prolonged inclement weather. The manual recommends using USB charging on lengthy, overcast days to maintain battery performance. (Pages 4, 6)
From the official Brightown HLS-W-XXXWW-S LED Solar Firefly Light manual, page 4
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