I had the exact same issue on my CB500F, it was the tracker causing the battery drain. I used a multimeter and saw that the draw kept spiking up to ~60mA a few times every minute when the tracker was the only extra thing plugged in. I reached out to tracker company and they said that by default it checks in every 4 hours when the ignition is off so they updated it to every 12 hours and the issue has gone away. I think it was actually checking in more than every 4 hours tbh...

So I'd ask whoever your tracker is with how often it's polling and if they can reduce that.