Cordless Tattoo Power Supply with LCD — Portable 5 to 12V Control Overview A compact, batterypowered tattoo power supply designed for professional use. Adjustable voltage, a clear liquid crystal display, and a standard RCA output provide precise control and wide compatibility for rotary pen tattoo machines, liners, and shaders. Key benefits Precise speed control: Adjustable voltage from 5.0 to 12.0 volts with 0.1V increments lets you fine tune machine speed for different techniques and body areas. True cordless convenience: Eliminates the need for power cords, clip cords, and foot pedals to simplify setup and increase mobility during sessions. Reliable runtime: Builtin 1300mAh battery supports continuous use for approximately 3 to 5 hours on a full charge, allowing extended workflows or alternating with a second unit for long projects. Clear monitoring: LCD shows current voltage and remaining battery so you can check settings and power at a glance. Broad compatibility: Standard RCA interface fits all standard RCA connection rotary pen tattoo machines, including liners and shaders. Materials and build Housing: Aluminum alloy for a lightweight, durable casing. Internal: Quality electronic components for stable voltage output and consistent performance. Controls and operation Power on/off: Long press the power button to turn the unit on or off. Voltage adjustment: Short press the plus or minus keys to change voltage in 0.1V steps. Long press plus or minus to adjust quickly. Pause and resume: Short press the power button to pause or restart operation during a session. Display: LCD indicates both set voltage and remaining battery level. Practical applications and scenarios Fine lining on wrists or fingers where low, steady RPM is required to avoid overworking the skin. Shading and packing on larger areas such as shoulders or backs, using higher voltage settings for deeper saturation while monitoring battery level. Mobile and convention work where quick setup, freedom from cords, and easy meter readings help maintain workflow between clients. Specifications Item type: Tattoo power supply Adjustable voltage range: 5.0 to 12.0 volts, 0.1V adjustment accuracy Battery capacity: 1300mAh, approximately 3 to 5 hours runtime per full charge Interface: Standard RCA connector Material: Aluminum alloy and electronic components Compatibility Works with all standard RCA connection rotary pen tattoo machines, liners, and shaders. This unit provides targeted voltage control, cordless convenience, and clear status information to support professional tattoo workflows without added cables or pedals.