Twice
They have never won an NBA championship
5 Nba championships
0.
one
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)
The Pistons have won 3 NBA championships, being in the years of 1988, 1989, and 2004.
LeBron James has gone to the NBA championships six times.