This battery is currently the largest battery on the market. The battery can work for 5 hours. This is a revolutionary change in tattoo work. Dynamic power path management USB-C lithium-ion battery provides high energy density to provide high reliability and stability. Supports 5 different voltage outputs, the operation is very stable. It can help you get your tattoo done, even without power. Currently its design can be used with any tattoo pen except cheyenne.