BL Battery (3)
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BL Battery (3)

Price: $10.95
  • Item #: BL
  • Manufacturer: Firenock
  • Manufacturer's Product Number: BL
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Firenock Long Shelf Life battery (BL) is for all Firenock lighted nocks.  BL battery has a long shelf life up to 3 years.  It provides brilliant performance under a wide temperature range in particular under hot environment and is available for purchase all year round.

Features of BL battery:

  • Long shelf life up to 3 years
  • Strong power (~70% as bright as BR)
  • Long runtime 21 days

 Specification of BL battery:

  • Operating Temperature Range: -4 to 180 °F
  • Voltage / Initial Blast Rate: 3.1V / 133mA
  • Shelf Life: 36 months
  • Weight: 8.5 grain


  • 3 BL batteries
  • 3 Battery pin O-rings


  • Under room temperature (65 °F), BL battery can have 21 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. 
  • Battery 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.
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