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Electrical Specifications:

Nominal Voltage: 14.4V

Capacity: 4,000mAh

Watt Hours: 57.6Wh

Constant Discharge Power: 140W

Constant Discharge Current: 16 Amps

Burst Current: 24A for 10 seconds

(avaliable between -6C/25F and 35C/95F with airflow)

Charge Rate:

  • 4 Amps Normal, 6Amps Rapid

Voltage Maximums:

  • Max voltage: 16.8V pack, 4.2V per cell
  • Min voltage: 10.2V pack, 2.55V per cell


Mechanical Specifications:

Cell: Amprius 18650

Configuration: 4s1p

Energy Density Specs:

  • Weight(±1g): 205.98g
  • Cell Energy Density: 302.9Wh/kg
  • Pack Energy Density: 279.6Wh/kg
  • Pack Volume: 92.705cm^3
  • Pack Volumetric Density: 0.6213Wh/cm^3


  • Balance Plug: JST-XH-5P, 22AWG
  • Discharge Plug: XT30 or XT60, 14AWG


  • 7.16cm x 3.7cm x 3.7cm (L x W x H)

Maximum Operating Temperature Range:

  • -17C/0F - 70C/165F

4s AMPRIUS GREEN 4000mAh 140W Dark Lithium LiIon Battery


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