This Battery Pack turns on by simply holding the power button at the very top of the device. Below the power button are five indicator lights that represent the operating output voltage. This battery pack can operate from 3V up to 12V in 1V increments.

Artists can easily adjust the voltage on this battery pack using the power button at the top and the square button located at the bottom of the device. A simple click or short-press of the power button increases the voltage, while clicking or short-pressing the square button decreases the voltage.

When fully charged, this device allows artists to tattoo efficiently for 3–5 hours average, depending on the operating voltage being used. It is recommended to have at least 1 other battery pack on standby in the event that your battery power starts to fade during tattoo procedures. Additionally, artists can short-press any button on the power pack to view power consumption (battery life) when the device is powered off. This listing is for one battery pack complete with a USB cable for charging the device.

features

•  The tattoo power supply is made of plastic, good design, small size, light weight and easy to carry around. so you can carry out outdoor tattoo work.

• Anodized body appearance, the color looks more upscale.

•  Works for all kinds of tattoo machine with high quality.

• Smooth appearance and technical handcraft.

•  Stable performance,durable for long time working.

• Automatically adjusts to power input provided (110v or 220v).

• It is fit for all wrap-coil machines and rotary machines. Divided into DC interface and RCA interface for your choose.

• Net Weight:  52.5g (1.85oz)

• Input Voltage:  5V/1A

• Output Voltage:  3V–12V

• 2.1mm inner bore DC plug

• Comes with 5 voltage indicator lights

• Increase or decrease voltage with convenient short-press of buttons

• Works with most rotary tattoo machines on the market