Will not start, electrical issues

Hello, my vehicle was running great until a few days ago. Went out to start it, put the key in and turned it, got nothing. Tried a few times and got nothing. All of a sudden, turned the key, gauges came on but wouldn't crank over. I pulled the battery and had it tested, was told the battery passed fine. Put it back in, still no crank. Jumped it and after a few minutes it started, all was fine for a day, battery charged up over 14 while running started up multiple times just fine. Next day went to start it and again no power, will only start if I jump it. Still seems to charge while driving but as soon as I shut it off, I got nothing. Any advice would help.