Battery shield Not charging with LM 2596 DC to DC buck Converter

Other Hardware General Electronics
1

Hi,

I am Making a device with ESP32 which can fit on Scooter, to power ESP32 I am Using battery shield photo attached as per below.

Everything is working fine but when I try to charge battery shield with LM2596, LED indicator not working but when I connect it with normal charger LED indicator is working
LM2596 input volt is 16 volt and I keep LM2596 reduce voltage on 4.2 volt to charge battery shield.
I am using c type connector which connected to battery shield and JST xh Connector to LM2596.

I had remove 4 out of 5 LED from battery shield (which shows charging state), to save power.

And USB c type wire with JST xt connector Lm 2596 side and c connector battery shield side. I used 2 wire out of 4 which are already in USB wire.

I checked battery shield C connector, it showing 4.2 volt means power is coming in that board but not charging to Battery

Please suggest what is the issue and how to resolve it if anyone know

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2

Use the micro usb port and short the data lines togeher.

3

Have uou tried setting the LM2596 output voltage to 5V?

4

Not understand this, can you explain how can I do this
I trying to solder connector in micro usb port, for that purpose I removed micro usb port.

5

Yes, I checked with 5 volt also, but it's not working