Skip to content


Your cart is empty

Critical Universal Battery Bundle (Two Batteries + Dock)

Sale price£400.00 Regular price£599.00
Out of stock



Time to turn your favourite rotary tattoo machine into a wireless powerhouse with the Critical Universal Battery.

The Critical Universal Battery is compatible with most rotary tattoo machines and offers an ergonomic, balanced and intuitive user interface that provides true freedom while working.

This battery pack features a Critical Core, which provides a consistent and stable voltage output. Depending on the voltage and machine used, the Critical Universal Battery will offer up to 10+ hours of running time.

This bundle contains two Critical Universal Batteries. Please use the drop-down to select your required batteries.

Key Features:

  • RCA and/or 3.5 mm (Cheyenne) connection(s)
  • Colour: Black
  • Compatible with most rotary tattoo machines
  • Voltage: 4-13 V
  • Critical Core - consistent and stable voltage output
  • Lightweight and balanced
  • Intuitive user interface
  • Up to 10+ of running time
  • Length: 6.3 cm
  • Width: 3.2 cm
  • Weight: approx. 57 g

The Critical Universal Battery Dock is perfect for keeping your workstation organised while charging your Critical Universal Batteries. Compatible with both the RCA and 3.5 mm (Cheyenne) connection batteries.

This docking station features a no-fuss, easy battery swap, so you can swap out the Critical Universal Batteries quickly with just one hand. Batteries will take approximately 2-3 hours to charge from depleted to full.

The Critical Universal Battery Dock has a built-in magnetic base that allows artists to mount it on any metal surface for easy access during tattooing sessions. The batteries will fit into the dock easily, precisely and will stay in place at most angles.

Key Features:

  • Compatible with both the RCA & 3.5 mm (Cheyenne) connection Critical Universal Batteries
  • Two charge slots for Critical Universal Batteries
  • Quick battery swap - one-handed battery change
  • Approx. 2-3 hours charge time from depleted to full
  • Built-in magnetic base
  • Colour: Black
  • USB-C cable & wall plug
  • Dimensions: 5.1 x 10.2 x 3.0 cm (2" x 4" x 1.2")