Make sure that battery is set in the output of the midi track that has the notes you created. Also make sure that the sample cell in battery is set to the corresponding midi note that will trigger battery or you won’t hear anything. If all else fails create a new midi track and drag the midi to that track and do what I said before. In cubae 7.5 I have found an error with midi tracks not playing sometimes. Don’t know if that’s the case with 6.5 to.