Not useful for Note 4. It charges at 650mA too slowly so you can't use it and charge it as it just HEATS and LOSES charge. So, with the same success, you can connect to Quickcharge 2.0 USB at 2.5 amps. Pair it with the Pleson Fast Charge Wireless Base and setup is a pleasure if you leave it overnight. However, this is the only use case for sitting continuously for more than 2 hours and charging slowly. If this is your use case, then this product is for you. I usually use my phone and it would be nice if it could charge wirelessly while on the "dock" while using the speaker. I found that it heats up and doesn't charge, but rather delays the discharge. With USB power I don't have this problem at all.
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