Review on 🌍 BN-880 GPS Module U8 with Flash HMC5883 Compass + Active Antenna - Car Navigation for Arduino, Raspberry Pi, Pixhawk, and APM Flight Controller by Alonzo Wilkins

First use, it takes a long time to fix the GPS because the small backup battery is dead. It will always die after being left more than 2 days, this is normal. Then, after finding a solution, the next batteries will be available almost immediately. They work great but they are very fragile. They work for iNAV and GPS functions in Betaflight. I only wish you could mount it in a protective case, otherwise it wouldn't need to be on the quad to work properly.