DFR0362 current too low

Hello,

I purchased a DFR0362 wireless charging kit through Digi-Key.

I connected it to a PCB with some electronic that sinks about 150mA with a charging circuit that can provide up to a 1A for a 6000mAh LiPo battery.

By using the USB power, I can see the correct current consumption but by powering it with the DFR0362 I can see maximum 750mA.

This only by keeping contact between the two coils.

If I put a transparent plastic ruler with a thickness 3mm, the current goes down to 5mA.

Can you please help me?

Thank you very much.