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21700 Batteries

21700 Batteries are the high energey density batteries that support super bright flashlights with extended runtime. Learn more at 21700 Battery Guide: What You Need to Know
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NITECORE NL2140HP 21700 4000mAh Rechargeable Li-ion Battery Nitecore NL2140HP 4000mAh Rechargeable 21700 Battery, High Performance - Used


  • Gently Used Product

  • Battery Type: 21700

  • Capacity: 5000mAh

  • >15A High Performance

Used Price: $17.00
NITECORE NL2150 21700 5000mAh Rechargeable Li-ion Battery Used Nitecore NL2150 5000mAh Rechargeable 21700 Battery - USED

  • Gently Used Product
  • Battery Type: 21700
  • Capacity: 5000mAh
  • Rechargeable

Used Price: $19.96

(1)
NITECORE NL2150R 21700 5000mAh USB-C Rechargeable Li-ion Battery Nitecore NL2150R 5000mAh USB-C Rechargeable 21700 Battery

  • Battery Type: 21700
  • Capacity: 5000mAh
  • USB-C Rechargeable

Price: $21.95

(17)
NITECORE NL2150HPR 21700 5000mAh USB-C Rechargeable Li-ion Battery Used Nitecore NL2150HPR 5000mAh USB-C Rechargeable 21700 Battery, High Performance - Used

  • Gently Used Product
  • Battery Type: 21700
  • Capacity: 5000mAh >15A Max Continuous
  • USB-C Rechargeable

Used Price: $23.16

(3)
NITECORE NL2142LTP Cold Weather 21700 Battery Nitecore NL2142LTP Cold Weather Low Temperature 21700 Battery


  • Battery: 21700

  • Type: Rechargeable

  • Temperature Range: -40F - 122F

Price: $23.95

(1)
NITECORE NL2150 21700 5000mAh Rechargeable Li-ion Battery Nitecore NL2150 5000mAh Rechargeable 21700 Battery

  • Battery Type: 21700
  • Capacity: 5000mAh
  • Rechargeable

Price: $24.95

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NITECORE NL2150i 21700 5000mAh Rechargeable Li-ion Battery Nitecore NL2150HPI 5000mAh Rechargeable 21700i Battery

  • Battery Type: Customized 21700i
  • Capacity: 5000mAh
  • >15A Rechargeable Battery

Price: $25.95

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NITECORE NL2150HP 21700 5000mAh Rechargeable Li-ion Battery Nitecore NL2150HP 5000mAh Rechargeable 21700 Battery, High Performance

  • Battery Type: 21700
  • Capacity: 5000mAh
  • >15A High Performance

Price: $28.95

(21)
NITECORE NL2150HPR 21700 5000mAh USB-C Rechargeable Li-ion Battery Nitecore NL2150HPR 5000mAh USB-C Rechargeable 21700 Battery, High Performance

  • Battery Type: 21700
  • Capacity: 5000mAh >15A Max Continuous
  • USB-C Rechargeable

Price: $28.95

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NITECORE Intelligent 21700 Battery System - MPB21 Kit: Lantern, Dual Function Battery Charger Nitecore Intelligent 21700 Battery System - MPB21 Kit: Lantern, Dual Function Battery Charger

  • LED: High CRI >90 Neutral LED
  • Brightness: 80 Lumen
  • Battery: 5000mAh NL2150HPi 21700

Price: $34.95

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Which 21700 Battery Works for Your Flashlight?