Introducing The Nucleus power supply from Hard Life Rotaries. The Nucleus is the world’s first patented, completely adjustable wireless power supply. Weighing in at only 48 grams so you needn’t worry about added weight to your machine. With a run time of 8-16 hours (when used with a Hard Life Rotaries Machine). With 27 output variations, you have full control of your power just like other conventional power supplies, starting from 4v going up to 11v. Two battery packs are included with each purchase so in reality you get 16-32 hours’ tattoo time if both fully charged. The re-charge time is only 2.5 hours!