0.
Charlotte Bobcats
They have never won an NBA championship
5 Nba championships
Twice
one
The Charlotte Bobcats and the Oklahoma City Thunder.
4 times
17 championships.
The Boston Celtics have won the NBA Championship 17 teams, the most by any team.
probably about 4 or 5
11 years
15 NBA titles and 1 NBL Championship (National Basketball League)