I'm not a pro at this yet, and I may have bad info, but it seems the the cooldown has a lot to do with your recharge rate and your overall energy generation. If it's going slow, build a larger energy pool and or add a module that helps reduce the recharge duration. On large jumps I rarely had more than 20 seconds of cooldown (I'm at the 5th ore right now).
Hopefully someone more knowledgeable will add some better detail.