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HF has the "blue flame" welding helmets on sale here for $49.99 so I bought one. I noticed in the instructions that you must leave it in the sun for 4 hours to charge the battery prior to use. Well, it was raining when I opened the box so I couldn't charge it and use. I returned it for a refund. Are all the solar powered units like this or only the ones with battery back-up? I assume solar-powered helmets without batteries can just be used anytime? Is minimal incandescent garage lighting acceptable or do you need to be outdoors? Should I look for one without batteries?
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