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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.
100+$3.75 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 features manganese for stability and nickel for a boost of extra energy capacity. 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
    41 Reviews
    85% (35)
    7% (3)
    0% (0)
    0% (0)
    7% (3)
    By James B.
    Samsung 18650 2500mAh Li-ion Batteries
    May 8, 2020
    These were the right batteries for my video doorbell. The only problem I had was the center battery position would not fit snugly. A little tweeking and I got it to work finally. Always great reliable products and great service.
    By Lisa S.
    Liverpool, New York
    Just as described and pictured
    April 24, 2020
    I was looking for an odd battery and this website came up. I never heard of them before so I took my chance. They were fast shipping. I will definitely come back.
    By Alex
    Oklahoma City, OK
    Quality Battery
    April 22, 2020
    There are many brands of 18650 Lithium Ion online. From my previous experience, not all Lithium Ion batteries are same. Some can be really bad. This brand is a very good one. I've used these batteries to replace my power tool batteries. They provide enough power and last quite long.
    By Cassandra F.
    Kansas City, MO
    Will not buy again
    April 7, 2020
    These batteries lasted 2 days. I wasted my money.
    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.
    There are no questions or answers for this item.

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