SAMSUNG 18650 25R 2500mAh 20A Battery



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The Samsung 25R 2500mAh INR 18650 Battery is the most recent battery released from Samsung. This 2500mAh battery uses a "Safer" INR chemistry. Low internal resistance and a maximum continuous discharge rating of 20amps make the Samsung INR 18650-25R Battery a great choice for any vaper using builds above 0.2ohms. We recommend the Samsung INR 18650-25R for use with tank systems whose total resistance measures @ or above 0.2ohms. These batteries are high capacity, high discharge current cells. The batteries can cause serious injury or property damage if mishandled or mistreated.

Main Features & Specifications

  • Model: INR18650-25R
  • Colour: Green (can be Light Blue refer above diagram)
  • Positive Terminal Style: Flat-Top
  • Protected (PCB): No (Unprotected)
  • Manufacturer: Samsung
  • Country of Origin: South Korea
  • Chemistry: IMR
  • Continuous Discharge Current (Max): 20A
  • Rated Capacity (Min): 2400mAh
  • Nominal Capacity: 2500mAh
  • Nominal Voltage: 3.6V
  • Voltage Discharge Cut-Off: 2.5V
  • Charging Voltage: 4.20V +/- 0.03V
  • Charging Current (STD): 1.625A
  • Cycles: Nominal capacity drops to 60% after 250 full charge/discharge cycles
  • Discharge Voltage Limit: 2.5V (don't discharge below this)
  • Impedance: 22.15 +/- 2 milliohms
  • Dimensions: 65 x 18.2mm
  • Charge Time: 2.5 - 3 hours
  • Weight: 45g
  • Official Test & Specifications Report


    General Battery Safety

    Download "Safety of Lithium-Ion Batteries" document

    Battery safety is very important. Mistreated batteries can get extremely hot and/or vent which could cause injury. Always follow the following rules to make sure this doesn't happen. We are not liable for mistreated batteries.

    • Never completely discharge batteries (below 2.5V under load or 3V unloaded)
    • Charge fully (to 4.2V) before first use
    • Never use a lot of force on the battery to install
    • Use only high quality battery chargers
    • Do not expose to heat
    • Do not connect the positive contact to the negative contact without an appropriate load
    • Be mindful of the current limits in the specification and never exceed them
    • Never keep spare battery or batteries loose in or near;
      • Pocket etc
      • Purse etc
      • Vehicle glovebox or console compartment, in fact never in a vehicle
      • Direct sunlight
      • Machinery
      • Fire or heat sources
    • If storing batteries short or long term, use these guidelines
      • Use a battery model specific protective case, found here
      • Use a cool & dry environment
      • Don not store fully charged, approximately 3.6~3.7V is best
    • Never try to charge or discharge li-ion batteries with battery chargers that are not made for Li-ion batteries
    • Never charge battery 4.3V or above
    • Do not charge unattended
    • Do not store your li-ion batteries fully charged for an extended period of time (weeks or more)

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