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Samsung 25R 18650 20A Flat Top 2500mAh Battery - Genuine - Wholesale Discount

Samsung

$ 6.29
556 reviews

SKU: samsung25r_qty1

This product is either priced at a low wholesale-level price or is a limited quantity product so it is not eligible for any quantity discounts. Quantities ordered will not count towards quantity discounts on other products.


Genuine Samsung INR18650-25R 2500mAh batteries are a great battery cell that can handle some really high current at a great price.  This is the 25R6, the newest version of the green 25R.  Note this is even newer than the 25R5.  The 25R is one of our favorites from our testing at high currents.  The 20A rating is very conservative and they tend to outperform other 20A batteries.  The problem is there are many counterfeits on the market but you can be sure these 25R's are genuine.  We've done extensive testing to be sure they're authentic so you can be confident you've got the real thing. 

Samsung 25R Datasheet

There are both a Korean made and Malaysian made version of this cell.  The Malaysian one says "25RM" while the Korean one just says "25R".  These are made to the same specification and perform the same so you may receive either one from us.  If you require a certain version you can contact us to see which we have in stock. 

Specs:

  • Chemistry:  INR
  • Max Continuous Discharging Current: 20A
  • Max Pulse current (less than one second pulse):  100A
  • Typical Capacity: 2500mAh
  • Style:  Flat top
  • Approximate Dimensions: 64.85 ± 0.15 mm (L) x 18.33 ± 0.07mm (D) 
  • Weight: 43-45g
  • Discharge cut-off voltage: 2.5V
  • Voltage: 3.6V
  • Full Charge Voltage: 4.2V ± 0.05V
  • Origin:  South Korea

Batteries are sold individually.

If your battery is damaged or defective on arrival (will not take its first charge, or has issues with its first cycle), please let us know within 14 days of receiving your order and we'll make it right. Please read our complete store policy on defective products here for more information and to see if you're eligible.

Manufacturer ratings: Please see more information regarding manufacturer ratings here.

Battery Warning

Warning: Lithium ion batteries may explode or burn due to improper use. Using these batteries for purposes not intended by the manufacturer, including outside a battery pack and/or without a BMS, may cause severe injury and damage. We are not responsible for any injuries caused by lithium ion batteries - use at your own risk.

All rechargeable batteries have inherent risks under any circumstance. Use caution with working with li-ion batteries (lithium-ion), LiPo (lithium ion polymer), and any rechargeable cells (together "rechargeable batteries"), as they have dangerous charging characteristics and are known to explode or burn if mishandled. A purchaser and user of rechargeable batteries should educate themselves on rechargeable batteries, especially as to charging, discharging, assembly, and storage. Learn more about proper storage and care for rechargeable batteries here. We are not responsible for any damage caused by the misuse or mishandling of rechargeable batteries.

Here are a few tips:

  • Never completely discharge batteries (below 2.5V under load or 3V unloaded)
  • Charge fully (to 4.2V) before first use
  • Never charge batteries to 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)
  • If you must store your battery, only store in a case or individual box in a cool and dry place at approximately 3.6-3.7V
  • 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
  • Never exceed the battery's specifications
  • Never try to charge or discharge li-ion batteries with battery chargers that are not made for li-ion batteries
  • Always charge these batteries on and within fireproof material
  • Never leave rechargeable batteries in a recharging station unattended
  • Do not use any rechargeable battery or charger if any visible damage is present, or if known mishandling, accidental or otherwise, has occurred
  • Always store and transport rechargeable cells in a safe, non-conductive container (never keep a spare battery loose in a pocket, purse, etc. and always use protective cases)
  • Properly dispose of all battery cells and chargers in accordance with local laws and mandates (if you're unsure, contact your local municipality)
  • If a rechargeable battery overheats, hisses, or bulges, immediately quarantine the battery from any combustible materials - ideally, take the battery outside
  • If a rechargeable battery catches fire, the FAA recommends pouring water or soda on the battery and surrounding areas - ideally, use a foam extinguisher to quell the fire

By purchasing this product, you agree that seller makes no warranties whatsoever with respect to the goods sold on this website, including any (a) warranty of merchantability or (b) warranty of fitness for a particular purpose, whether express or implied by law, course of dealing, course of performance, usage of trade or otherwise. Buyer acknolwledges that it has not relied upon any representation or warranty made by seller, or any other person on the seller's behalf. If purchasing for resale, buyer assumes all responsibility and agrees to forward all notifications and warnings to the purchaser.

Customer Reviews
4.8 Based on 556 Reviews
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BD
02/12/2021
Brian D.
United States United States
These are genuine cells.

I tested a few random cells from both boxes. Weight capacity and discharge are all well within spec. I was nervous about spending $500+ on batteries with pooled money from coworkers to rebuild our milwaukee & snap-on battery packs, but these are the real deal. I'm very glad i chose li-ion wholesale and they're right across the delaware river, so i was able to support a local business while also getting what i need with no compromises. Win/Win. I will definitely buy cells again, and after this, from no one else. ...and no, im not soldering them, my soldering iron just happens to be in the photo. I am an auto body tech, i spot weld professionally.

  • What device/application do you use this with? Milwaukee battery pack rebuilds/upgrades
Liion Wholesale Batteries Samsung 25R 18650 20A Flat Top 2500mAh Battery - Genuine - Wholesale Discount Review
NW
12/03/2020
Nick W.
Canada Canada
Good batteries

decent price, good service enjoy shopping at Liion Wholesale

  • What device/application do you use this with? e-bike
Liion Wholesale Batteries Samsung 25R 18650 20A Flat Top 2500mAh Battery - Genuine - Wholesale Discount Review
MK
10/14/2020
Matt K.
United States United States
Excellent cells

This are perfect for my diy LI-ION pack for my RC planes

  • What device/application do you use this with? RC Planes
Liion Wholesale Batteries Samsung 25R 18650 20A Flat Top 2500mAh Battery - Genuine - Wholesale Discount Review
GL
06/17/2020
Gary L.
United States United States
Great quality

I have purchased hundreds of batteries from Liion and all have been perfect. All of them.

  • What device/application do you use this with? Electric Go Kart
Liion Wholesale Batteries Samsung 25R 18650 20A Flat Top 2500mAh Battery - Genuine - Wholesale Discount Review
CW
06/16/2020
christopher w.
United States United States
Looks genuine

Samsung 25r battery works excellent

  • What device/application do you use this with? E bike battery build
Liion Wholesale Batteries Samsung 25R 18650 20A Flat Top 2500mAh Battery - Genuine - Wholesale Discount Review

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