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Tenergy 31001 Battery Pack - 18650 5200mAh 3.7V Protected Lithium Ion (Li-ion) Bare Leads Battery - Bulk

The Tenergy 31001 battery pack with 5200mAh capacity
The Tenergy 31001 battery pack with 5200mAh capacity
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Tenergy 31001 18650 Battery Pack

3.7V / 5200mAh / PCB Protection

Tenergy has come out with an all new 18650 battery pack: the 31001. Featuring a power-packed capacity of 5200mAh, the 31001 battery pack is a significant step up from the 31000's 4400mAh. This pack is completely rechargeable due to the li-ion technology within its two 18650 cells. The 31001 has a longer life than traditional NiMH cells, and doesn't suffer from memory effect when charging. Lightweight, energy-dense, PCB-wrapped, and protected with a built-in IC chip and poly switch for (over/dis)charge protection, you'll be hard-pressed to find a better 18650 battery pack than the Tenergy 31001. In fact, Tenergy recommends these for building battery packs, and can be increased to 7.4V/5.2Ah packs when connected in parallel.


  • Size: Battery Pack
  • Chemistry: Li-Ion
  • Nominal Capacity: 5200mAh
  • Nominal Voltage: 3.7V
  • Cycle Life: >300 Cycles

Charge Specifications

  • Standard Current: 0.2C
  • Rapid Current: 0.5C
  • Charge: 0 ~ 45℃

Overcharge Protection

  • Detection Voltage: 4.250.05V
  • Release Voltage: 4.050.05V

Over-Discharge Protection

  • Detection Voltage: 2.50.1V
  • Release Voltage: 3.00.075V
  • Rated Discharge: ≤6.0A
  • Current Detection: 112A


  • Thickness: 18.8(0.5mm (.75")
  • Width: 36.8(0.5)mm (1.45")
  • Height: 66.3(0.5)mm (2.61")
  • Weight: 96g (3.39oz)

Discharge Specifications

  • Max Current: 6.0A
  • Standard Discharge: 0.2C
  • End Voltage: 2.75V
  • Max Discharge Temperature: -20~60℃

Temperature Ranges

  • Storage (≤30 Days): -20 ~ 45℃
  • Storage (≤90 Days): -20 ~ 40℃
  • Storage (≤1 Year): 0 ~ 30℃
  • Storage (Longterm): Best 10 ~ 25℃
  • Storage Humidity: 6025%R.H
Battery Size:Battery Pack
Battery Capacity (mAh):5200
Battery Chemistry:Li-Ion
Battery Voltage:3.7
Battery Terminal Type:Bare Leads
Battery Shelf Life:3 Years
Warranty:Battery Junction 30-Day Warranty, Tenergy 90 Day Warranty
Return Policy:Battery Junction Return Policy
Product Weight:3.39oz
Product Dimensions:0.75" (L) x 1.45" (W) x 2.61" (H)
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Tenergy 31001 Battery Pack - 18650 5200mAh 3.7V Protected Lithium Ion (Li-ion) Bare Leads Battery - Bulk

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