BU Battery (3)
Click To Enlarge

BU Battery (3)

Price: $15.95
  • Item #: BU
  • Manufacturer: Firenock
  • Manufacturer's Product Number: BU
* Marked fields are required.
Qty: *

Firenock Ultra Long Shelf Life battery (BU) is for all models of Firenock lighted nock.  BU battery is the best battery for back up purpose due to its ultra long shelf life up to 7 years. It provides brilliant performance under a wide temperature range and is available for purchase all year round.

Features of BU battery:

  • Ultra long shelf life up to 7 years
  • Strong power (~50% as bright as BR)
  • More than 90% capacity even after 6 years on shelf
  • Long runtime 10 days

 Specification of BU battery:

  • Operating Temperature Range: -4 to 160 °F
  • Voltage / Initial Blast Rate: 3.0V / 80mA
  • Shelf Life: 7 years
  • Weight: 8.5 grain


  • 3 BU batteries
  • 3 Battery pin O-rings


  • Under room temperature (65 °F), BU battery can have 10 days runtime with Firenock HR circuit.
  • Remove batteries from Firenock circuits and store them in original package under room temperature if not going to be used over 30 days. 
  • Batteries of Firenock will be drained out completely around 8 to 12 months or less if installed on Firenock circuit without use. 
  • Battery must be installed with battery pin O-ring before installation to prevent failure / short circuit of Firenock.




Reviews (0) Write a Review
No Reviews. Write a Review