Skin Deep Portable Tattoo Pen Battery (2400 mAh) (Universal)

Skin Deep’s new lithium battery adapter fits on any tattoo machine pen using DC 5.5 connector. Very easy install. 2400 mAh capacity lasts you 4-6 hours. Keep multiple batteries charged for all day and night tattooing. Quick charging time of about 2 hours with 800mA charging current. Working voltage of 3.7V and charging voltage of DC 5V ± 0.2V. Comes with five speed levels of 5V, 6.5V, 8V, 9.5V, and 11V. Battery has overload protection with output overcurrent, short circuit, overcharge, over discharge protection, and low power standby function.