I got two of these batteries one is in my Pulse 60XT the other one is in my PT 17 Stearman biplane. Both planes have hi torque servos ( 5 per plane ) the 600 mah nicad batteries I had in them got two flights ( 10 to 15 min) on a all night charge. With these batteries I did fly the pulse 4 10 min flights the other day and it took around 40 min to recharge it haven't took the biplane out yet I will get two more one in the 3d plane and one for the trainner