It worked to charge my phone (which I didn't really need). I wanted it to blow up an inflatable mattress which listed 60 watts (i.e., 5 amps), which should have worked since this is 5.8 amps. However, I got no response from the mattress air pump. Perhaps the mattress requires more than 60 watts/5 amps for the air pump to start. Sunforce did return my phone call about it, but I wasn't home, so still need to call them before returning the product.
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