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The Critical Connect Universal Battery delivers consistent performance with innovative connectivity options thanks to Critical Core technology. The battery can be connected to and controlled by the Critical Connect Footswitch via Bluetooth (to be purchased separately or as part of a Critical Connect bundle).

Product features:

  • Razor-sharp OLED display and precise voltage regulation
  • Ergonomic design
  • Bluetooth 5.0 technology
  • Critical Core - designed for constant performance and highest accuracy
  • Available in RCA and 3.5mm connections
  • Compatible with most rotary machines
  • Jump start function for large needle groups and hard to start motors
  • ON/OFF function of batteries with two modes: Continuous & Momentary
  • Compatible with Critical Connect Foot Switch (to be purchased separately or as part of a Critical Connect bundle)
  • Connect up to 4 Critical Connect batteries to one Critical Connect Footswitch for optimum flexibility and cordless freedom
  • Dual charging dock (to be purchased separately or FREE as part of a Critical Connect bundle)
  • USB-C charging cable included


  • Up to 10+ hours tattoo time
  • Voltage range 4.5 V - 13 V
  • Size (LxW): 6.01cm x 3.05cm
  • Weight: 56.07 grams

* = Critical Connect universal batteries are Bluetooth compatible and can be connected wirelessly with the Critical Connect footswitch (the Critical Connect Footswitch is ONLY compatible with Critical Connect batteries).