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Samsung 25R INR 18650 2500mAh 3.7V Unprotected High-Drain 20A Lithium Ion (Li-ion) Flat Top Battery - Bulk

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  • Ultra-high capacity that promises safe and steady performance thanks to it's INR chemistry
  • Samsung provides high quality batteries with safe and stable outputs for all devices
  • Low internal resistance makes this battery highly desirable for fragile devices
  • High maximum continuous discharge rates make it suitable for high drain devices
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4 - 19$3.90 ea.
20 - 99$3.85 ea.
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Samsung 25R Li-Ion 18650 Battery

2500mAh / 20A / 3.7V / Flat Top

As one of the most well-known batteries on the 18650 market, the Samsung INR18650-25R has earned its reputation for a reason. Samsung is one of the most reliable brands, providing high-quality, reliable, and safe batteries for affordable prices. The Samsung 25R is a customer-favorite in particular, as it finds that perfect balance between energy capacity and discharge rate, the two most important factors in an 18650 battery cell. With 2500mAh capacity and a continuous discharge rating of 20A, the Samsung 25R is the golden-standard battery for high-drain devices.

About INR Chemistry

Utilizing LiNiMnCoO2 chemistry, the Samsung INR18650-25R battery is considered among the safest and most stable of 18650s. INR batteries take IMR chemistry (lithium-manganese) and add in some nickel for an ultra-stable hybrid chemistry. Batteries like the Samsung INR18650-25R feature low internal resistance (≤ m18Ω), while retaining high energy, continuous discharge rates, and low temperatures all at the same time. If you’re looking to power a delicate electronic that requires a high-discharge, the Samsung 25R should be your #1 choice, available here at Battery Junction.

Product Specifications
  • Battery Size: 18650
  • Capacity: 2500 mAh
  • Max Discharge Current: 20A
  • Nominal Voltage: 3.7V
  • Cut-off Voltage: 2.5V
  • Chemistry: LiNiMnCoO2 (Li-Ion with Nickel/Manganese Oxide Cathode)
  • Terminal Type: Flat Top
  • Protection: Unprotected
  • Dimensions:
    • Diameter: 18.33mm + / - 0.07mm
    • Height: 64.85mm + / - 0.15mm
    • Weight: 45g
  • Internal Impedance: ≤ m18Ω
  • Cycle life: > 250 cycles
  • Charge: 1.25A, 4.20V,CCCV 125mA cut-off
  • Discharge: 0.2C, 2.5V discharge cut-off
  • Note: Batteries are sold individually.

    lithium-ion safety warning
    Battery Size:18650
    Battery Capacity (mAh):2500
    Battery Chemistry:Li-Ion
    Battery Voltage:3.6
    Battery Terminal Type:Flat Top
    Battery Shelf Life:3 Years
    Warranty:Battery Junction 30-Day Warranty
    Return Policy:Battery Junction Return Policy
    Product Weight:1.587oz
    Product Dimensions:2.553" (L) x 0.722" (Diameter)
    Country of Origin:CN
    Associated Battery Sizes:168A, 18650, 19670, Protected 18650, Unprotected 18650
    37 Reviews
    86% (32)
    8% (3)
    0% (0)
    0% (0)
    5% (2)
    By Alex
    Work Horse !!!
    April 6, 2020
    Truly awesome batteries, I use them all the time for my high powered LED flashlights. They always work, always dependable, and they never fail.
    By Phil m.
    March 29, 2020
    Nice having the confidence of ordering batteries in bulk at a great price from a reputable company definitely have my future business
    By Tats007
    Great for the price
    February 21, 2020
    Batteries seem to work well. Hold a charge good. For the price can't beat them.
    By Hank
    Terrible battery life
    January 3, 2020
    I got these for my vape and they last maybe 1 hour of mild vaping. The worst battery I've used
    By William
    NYC, NY
    Great Pricing on these!
    November 8, 2019
    I needed some new 18650s for my single cell vape mods and these fit the bill for my needs since all my others were married
    There are no questions or answers for this item.

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