So I took the plunge and ordered the Battery packs. I couldn't be more happier. I've been using it since last Monday. The weight seemed a little off at first but quickly got used to it. Inkmachines say they hold a five hour charge but you actually get closer to seven. The wireless foot pedal has no delay so it's instant response unlike some others. There customer service was great and shipped to wisconsin from Sweden in exactly one week. Thank you Inkmachines!