Thanks for the replies.
I got a new soldering iron which fixed that part. Luckily my board didn't get damaged and I even managed to clean up some of the more ugly solders.
Hello everyone! So this is my first time building a quadcopter (and soldering too). I used a relatively old soldering gun to tin my wires and PDB and it went mostly well but when I plugged in my battery nothing happened and this part came off. I know I have to reattach it but I am not sure if my...