Instructions for use
Used for tattoo machine power supply.
Power on: Press the middle button to turn on/off the power
Increase voltage: "+" button
Reduce voltage: "-" button
Adjusting voltage: (6V, 7V, 8V, 9V, 11V) 5-level adjustment
Battery available power display: 5 lights on when -100% power; 1 light when -20% power.
Fully charged: 2-2.5 hours fast charge; 7-8 hours standard charge.
Available working time: 4-5h for normal tattoo work, 8-9h for no-load operation.
Working temperature: (charge) 0~45°C; (discharge) -10~60°C