Scooter 96v to 12v inverter help me solder back this coil

[marce002]

Hi\

Received from china this cheap, inverter,,,, opened and something was moving inside, it was this big coil unsoldered from board

can anyone please help me to find where to solder it back? it is not clear for me sorry:

View attachment 364981

 

[marce002]

solved thabks