i just put in 3 new batteries (AA's) the solar unit atop the umbrella. flip the switch and lights come on but at night they don't come on.
I've yet to get one of these for myself, so I have to apologize if this comment is off the mark. However, "solar powered" implies that there's a way to store that power for night use and that would require rechargeable batteries, not just any AA. Something like this: http://tinyurl.com/rechargable... or these: http://tinyurl.com/rechargable... because some of the solar light umbrellas descriptions do mention AAA rather than AA batteries.It's possible that the unit requires both types of batteries although it's rather unlikely. I would switch to rechargeables and see if it fixes the issue. The links I provided are to high capacity versions - I always replace "normal" rechargeable batteries with high capacity in my solar lights.
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