I'm dx. Bipolar II, so I get the hypo/manias not the manias, but they are definitely not elated. A definition I came across fits me to a tee:

"Dysphoric hypo-mania may be experienced by irritability, rapid thoughts which cause confusion and quick angry outburts. This dysphoric hypo-mania can cause problems in relationships, not only personal, but socialy and work related."

When this happens to me I get alot done but I'm furious and hateful with anyone in contact with me, and the world. I am a rapid cycler as well, and after a few hours or less, I crash and burn in remorse and self-hatred.

it is exhausting, and my pdoc says that at times it could well be mixed states.

This may not help you, as I don't experience Mania, but maybe it's similar but less intense.