Wireless Tattoo Power Supply Tattoo Battery Lithium USB Rechargeable Power Supply Digital Display with Memory Function 1650mAh Portable DC Connector Acrylic Frame for Rotary Tattoo Pen - HoriKing Tattoo Supply, Tattoo Power Supply04DCGray

• HoriKing Wireless Tattoo Power Supply is a portable lithium lithium battery with memory storage function，can be carried to any workplace！If you have 2 pcs power packs, you can tattoo for a whole day session! Charge one battery pack while you tattoo with the other! HoriKing lithium battery: The Wireless Tattoo Power Supply built-in 3x 550mAh lithium batteries, the working voltage is 3.7V, output current is 1A. Fast charging, can be full state in 1.5-2 hours，8-10v working at least 6 hours under normal！ This Tattoo Power Supply with 5-level voltage control adjustment from 5V ， 6.5V， 8V ， 9.5V ，12V .so it can be used with most tattoo pens on the market, both liner and shader. LED- Digital Display that provides high and efficient performance. Click "+/- " switch key, voltage change, 5V - 12 is on. Click "O" switch key to turn ON/OFF This Wireless Tattoo Power Supply in common use a USB charging power line. In order to extend the battery life, it is recommended to charge and discharge the battery at least once a month.