This upgrade will allow you to use 7.4v on your Omicron, and also turn the Omicron into a mini unit. This is not a standalone unit; it requires the bottom cap of the original V2 to operate in mini mode. 

Black Omicron HVD will only work with the Black Omicron v2

• 1 x 7.4v top to be used with short tube as well
• 2 x 14250 battery
• 2 x 14250 Battery Spacers
• 1 x Bottom cap for 7.4v
• 1 x Short tube for single 14250 battery configuration.

Specs

• Output voltage is what the internal battery voltage is.                       
• Input voltage:3.0Ｖ－8.4Ｖ
• Output current:0A-5.0A
  
• Quiescent current<10uA
  
• Short-circuit protection current：<20mA。LED will blink 3 times
• Accidental Drop protection, Unit will shut off and will go into stand by mode when droped only when used in 7.4v with bottom cap that has spring.
• Reverse Current Protection 
• Warning agaist the lowest voltage, light will blink 3 times when the cell (battery) voltage is under 3.0v
• Press five times within two seconds LED will flicker three times, press 5 times to turn it back on. 
• Durable connector
• Water Proof - If dropped in water just remove battery, bottom cap and top and let it dry over night. 
• Bution time out limit - No Limit