The image shows a Critical XR power supply unit with two digital displays, each showing different voltage readings. The unit is black, compact, and features a dual setup, allowing for the simultaneous monitoring and adjustment of power output for tattoo machines. The Critical logo is prominently displayed on the base of the unit.
Critical XR power supply with gold and black connector battery packs, including charging base.

Critical Tattoo® Universal Battery Dock

Regular price$99.95
Shipping calculated at checkout.
  • In stock, ready to ship
  • Backordered, shipping soon

  • Free shipping on order over $250. Learn More

Universal Battery Charging Dock by Critical Tattoo®

Turn any rotary tattoo machine into a wireless machine with the Critical Tattoo® Universal Battery. This super lightweight, balanced battery offers 10+ hours of tattooing, depending on your voltage and tattoo machine. Easily adjust your voltage using the intuitive and user-friendly interface. The Critical core allows for consistent and stable voltage output on a range of 4v up to 13v.

This listing is for the Critical Tattoo® Universal Battery with an RCA connection, compatible with most rotary tattoo machine brands on the market.


  • Charging dock for Critical Tattoo Universal Battery Packs
  • Dimensions: 2” x 4” x 1.2”
  • Compatible with the RCA connection and 3.5mm connection batteries
  • Equipped with two charging slots
  • Built-in magnetic bottom; mounts easily to any ferrous metal surface
  • Charges batteries from depleted to full in 2 –3 hours’ time
  • No-fuss battery swap for easy exchanges
  • Comes with USB-C cable and wall plug
  • 2-year manufacturer’s warranty
  • Manufactured in the USA

Note: Due to covid-19 precautions and high demand the shipping process would take longer than usual.

Note: Final Sale, Returns will not be accepted for this item.

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          Providing professional premium tattoo supplies to North America since 2018. Distributor of industry leading brands; Fk Irons, Cheyenne, Bishop, Kwadron, World Famous Ink, Solid Ink, Radiant Colors and much more.

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