Wisblock 19007 charging max

WisBlock
1

Couldn’t find it at first glance in the paperwork, hoping some one can pipe in. What is the max charging wattage for the 19007 base board?
tried charging a 1000Mah with a 22w Samsung fast charger and it works
tried with a 45w version and it wont charge.

I may just be confused as to the numbers or watts Vs ma, but the documentation from Rak shows 4.2v at 350ma
having a hard time figuring out what that converts to with watts from a wallwart.

2

The charging current is defined by a resistor on the charger chip.

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The selected resistor puts the charging current at around 350mA
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From USB you get 5V minus the forward voltage loss of ~0.5V of a schottky diode in the path.

So the max current drawn from the USB charger is ~1.75W
I am guessing your 45W charger might just shut down because it thinks there is nothing connected.