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I am trying to use this regulator module (LM2596) to regulate my car's 12V power (constant from fuse port), and use the LM2596 output set to 5.2V to charge my phone (LG G6) but get the slow charging warning (6hs xx mins to full).

I presume the output Amperage can meet whats specified ~2-3A, but obviously something is wrong. I gutted a USB extension cable to solder to the output of the regulator.

What Am I missing? Is this module capable of doing what I want?

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For my configuration using this phone, I was able to twist connect the two data wires together, which then my phone then stopped the naggy slow charge message.

I am aware that Apple uses a resistor across the data lines for their phones.

Link provided in comments was supplementary to my goal. Thanks

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