Infinite power....?

The recipe for the Enervation Dynamo is enabled by default on a pack when using the Creative Jetpack as a source of energy. It shouldn't be? It allows for "infinite energy" even after the jetpack is taken out, it will continue charging (the Creative Energy Cell from Thermal Expansion doesn't do this for some reason... so... unsure how the energy is implemented there).
Well the creative jetpack was never really ment to be used activly, more like a kind of debug item for me. But as a lot of modpacks use it in there quests a lot of weird behaviours come up now...
What exactly do you mean by it keeps charging? For how long?
Even after taking it out, the Enervation Dynamo will keep charging. As for how long, I'm uncertain. It just kept charging for some amount of time before the creative jetpack "ran out of power". And then after some time, it'll be back to full again and be able to charge again.