I bought 3 of these to avoid receiving a broken one - none of them work. In fact, he doesn't feed anything. The button board version does not store the voltage setting and will not let through more than 2 watts. The USBc module - I use it to charge my battery - goes through a boost converter and I assumed it would take the 20V, 5A output from this USBC card and charge my batteries - but it does it not. Don't buy if you're trying to do what I did.
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