The product specifications indicate an output voltage of 4.8 volts, more like 1.8 volts. Plugged my phone into this switch and got a message saying it would take 5 hours to fully charge. That's when I'm not using it. I'm streaming music while driving and charging can't keep up with streaming. The phone's battery drained quickly even when connected to the network and "charging". I would not recommend this product.
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