The challenge with wireless charging solutions for the FP1 is that those usually need permanent access to the (working) USB port. What you can consider:
- Use an external charger for your FP1 battery
- Find a local repair shop that resolders the USB port (or a new one)
- Look out for a used FP1 motherboard with a stable USB port in this forum’s unofficial market
- Contact your nearest Fairphone Angel to see if s/he has a motherboard for you
I’d especially recommend the third and fourth option.