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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
Usually ships the next business day
1 - 3$3.85 ea.
4 - 19$3.80 ea.
20 - 49$3.65 ea.
50 - 99$3.50 ea.
100 - 499$3.45 ea.
500 - 999$3.35 ea.
1000+$3.15 ea.
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Samsung 25R

20A High Drain, Flat Top 18650

One of the most well-known batteries on the 18650 market, the Samsung INR18650-25R has earned its reputation for a good reason. For a reliable, high-quality, and safe battery, you can't go wrong with Samsung.

The 25R hits that sweet spot with a 2,500mAh energy capacity and a 20A high-discharge rating, making it an ideal choice for high-drain devices that need 'pulse' current rates.

Li-Ion INR Chemistry

Utilizing advanced LiNiMnCoO2 (INR) li-ion chemistry, the INR18650-25R's secret is a blend of manganese and nickel for extra energy while remaining stable and safe. These kinds of batteries keep a low internal resistance (≤m18Ω), while retaining high energy capacity, continuous discharge rates, and low temperatures at the same time.

battery iconThis battery in unprotected and features a flat-top terminal, which may not be compatible with all 18650-powered devices. Please check your device first to confirm compatibility, or ask for help with our live chat!
  • Notable Features
  • » 20A high-discharge rate for high-drain portable electronics
  • » 2,500 capacity with over 250 charge cycles for long-term use
  • » Flat-top terminal is great for making battery packs
  • » Note: Batterries are sold individually

lithium-ion safety warning
Battery Size:18650
Battery Capacity (mAh):2500
Battery Chemistry:Li-Ion
Battery Voltage:3.7
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:China
Associated Battery Sizes:168A, 18650, 19670, Protected 18650, Unprotected 18650
47 Reviews
87% (41)
6% (3)
0% (0)
0% (0)
6% (3)
By John
Campwood, Tx.
January 11, 2021
Just what I was looking for.
By Alan M.
January 6, 2021
This was my first purchase with Battery Junction. Everything was great. Great service, quick delivery, great product.
I have been buying the 18650 batteries through Amazon and at first was able to get a "genuine" Samsung battery. Since over a year ago I could not find a genuine Samsung so I was buying from other vendors. The batteries were very inferior to the Samsung brand.
I decided to order from Battery Junction and found the exact Samsung battery I needed.
I received these batteries at a great price and they seem to be working great. Long battery life and able to fully recharge these batteries.
I now will be looking to order batteries for my S5 phones and also expect great quality.
Hope to be a long time customer.
Great Batteries!
January 6, 2021
Purchased 3 of these batteries to replace my robo-vacuum battery pack, very easy to do. Lasts twice as long as the original batteries, highly recommend and will be ordering more for my other robo-vacuums.
This is the one you need
December 8, 2020
Thanks these are great batteries, will order again 👍
By Jbird1014
Swansea, SC USA
works great
October 24, 2020
I replaced the batteries in my automatic security lights, and they work like new now. Service was excellent at a great price. I would recommend them to anyone, and I will deal with them again.
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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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