This is a great vendor to do business with.Everything came right on time in great condition and well packaged thanks.
Key Features
- 2500mAh nominal capacity optimized for mid-power applications
- 20A maximum continuous discharge for sustained current delivery
- Stable INR lithium-ion chemistry for consistent performance
- Flat top design suitable for battery pack assembly
- Widely used cell with proven reliability and availability
Overview
The Samsung 25R (INR18650-25R) is a well-established 18650 lithium-ion battery designed to deliver a dependable balance of capacity and output. With a 2500mAh nominal capacity and a 20A continuous discharge rating, this cell is engineered for mid to high-power applications requiring stable energy delivery and long-term consistency.
Applications / Uses
- Mid to high-power battery pack assemblies
- Electric tools and equipment
- Portable power storage systems
- High-drain electronic devices
- Custom energy solutions and projects
SPECIFICATIONS
| Manufacturer | Samsung SDI |
| Model | INR18650-25R |
| Size | 18650 |
| Positive Terminal | Flat Top |
| Nominal Capacity | 2500mAh |
| Continuous Discharge Rating | 20A (Max Continuous) |
| Nominal Voltage | 3.6V |
| Maximum Voltage | 4.2V |
| Discharge Cut-Off Voltage | 2.5V |
| Protected | No (Unprotected) |
| Rechargeable | Yes |
| Approx. Dimensions | 18.33mm × 64.85mm |
| Approx. Weight | 43.04g |
| Associated Names | 25R5, 25R6, 25R M, 25R8 |
| Data Specification Sheet | Samsung 25R Datasheet |
⚠ Important Safety Warnings
Improper handling or misuse of this lithium-ion battery can result in FIRE, EXPLOSION, or THERMAL RUNAWAY, causing personal injury, property damage, or death. Users must read and follow all safety guidelines before purchase and use. Click here to review the full safety guidelines.
- Critical Warning: Never carry loose batteries in your pocket, purse, or bag. Loose batteries can come into contact with metal objects like keys or coins, causing a short circuit, which may result in severe burns, fire, or explosion. Always store or transport batteries in a protective case.
- Intended Use: This battery is designed for integration into protected battery packs with a Battery Management System (BMS) or Protection Circuit Board (PCB). It is not intended for standalone use or for e-cigarettes, vaporizers, or similar devices.
-
Thermal Runaway: A chain reaction where heat from a failing battery
causes further overheating, potentially leading to fire or explosion.
- Causes: Overcharging, short circuits, physical damage, or exposure to high temperatures.
- Prevention: Use a smart charger, avoid damage, and store batteries in a cool, dry place.
- Storage & Transport: Always store batteries in protective cases to prevent accidental contact with metal objects. Never store loose batteries in pockets, purses, bags, or near conductive materials.
- Inspection: Do not use if the PVC wrapper, terminal insulator, or casing is damaged, dented, leaking, or bulging. Continued use could result in failure, fire, or explosion.
- Charging: Use a smart charger specifically designed for lithium-ion batteries and ensure the charger's voltage matches the battery's specifications. Never overcharge, over-discharge, or leave unattended while charging.
-
Prohibited Activities:
- Do not expose the battery to extreme heat, fire, or liquids.
- Do not short circuit, puncture, crush, or modify the battery.
- Do not charge or discharge beyond the manufacturer’s voltage range.
- Do not dispose of in regular trash—always recycle at approved facilities.
- Emergency Response: If a cell shows signs of thermal runaway (e.g., smoke, swelling, hissing, or heat), stop use immediately and, if it can be done safely, move it to a non-flammable surface (e.g., concrete or sand) away from combustible materials. Lithium-ion cells burn as Class B fires — use an ABC / dry-chemical fire extinguisher, or douse with large amounts of water to cool the cell and prevent the fire from spreading. Do not rely on a small spray; thorough cooling is required, and cells can reignite from residual heat, so monitor the area afterward. (Class D extinguishers are intended for lithium-metal batteries, not lithium-ion.) For any fire beyond a single small cell, evacuate and call emergency services.
Disclaimer
18650Battery.com is not responsible for any damages, injuries, or claims arising from improper use, handling, or failure to follow these safety guidelines. Lithium-ion batteries require strict adherence to all safety protocols. It is the reseller's responsibility to ensure all safety warnings and product guidelines are effectively communicated to customers. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.
Customer Reviews
Overall rating: 4.8 / 5 from 1287 reviews.
Was able to fix 5 DeWalt batteries with them 👍👍👍👍👍
Love these batteries. Definitely will be buying from here again.
Work great as replacements for the snapon 18v battery
Rebuilt an obsolete Airwheel S-3 battery. Lots of work but cells were perfect. They were all of the correct weight, internal resistance and capacity. Price was right. They were shipped well packed in a timely manner. Thanks
First time buying 18650 batteries, but no stranger to batteries. Got these for the Radiomaster pocket to practice on simulator. They charge fine in the controller and hold a charge well. Will order more for ham radio.
Batteries worked great for my refurbished m18 battery pack, boosted the AH from the originals. Been great so far. Batteries were packaged well and arrived at the same voltage across the board
Ordered 60 18650s and received them in a timely manner well packaged. Rebuild an ego blower pack, drill/ driver pack and an e bike battery all of which works well now. Couldn't be happier.
Tastes great! Less filling! 👍
I’ve been buying from this company for years, and they always have good quality, value and fast delivery. Highly recommended
These batteries charge fast and last a while, minimum 8 hours fully charged! As the picture dictates, I use them for my box mod. Very happy with this purchase!!!
This isn't my first purchase from this site. I am always impressed with the availability and authenticity of theses batteries, as we know buying batteries on eBay or Amazon can be quite risky as most are just cheap rewrapped and like about the mah capacity. So all that and and pretty quick delivery is why I choose 18650battery.com. I will continue to use this site for my 18650 batteries and accessories.
Use these cells to rebuild the pack for my Black and Decker portable vacuum. Huge improvement in battery life and general power compared to the OEM cells!
These are some of the batteries I ever used. Great price and they got delivered very quickly. They where packaged very well,thanks.
Changed out the batteries in my onewheel. Bit smaller than original capacity but more discharge amps. All 15 cells were within .007 volts! Ready to use right out of the box
These batteries were the perfect replacement in my Snapon 14.4v batteries. Snapon wanted $117 for a replacement battery. I rebuilt my own for less than $20.
Great long lasting cells
Super fast shipping! Battery worked great to replace on a Milwaukee M18 2.0 battery
I appreciated purchasing new, first grade, genuine Samsung 18650 cells, 2500 mAh capacity, to replace essentially dead Chinese cells of 2000 mAh capacity in a hoverboard battery pack. The cells were at the best price I've seen, and first quality. All cells 14 arrived in double-cell plastic protective boxes, in perfect shape, with date codes identical to those pictured on the internet site. The fully assembled battery pack functioned perfectly in the hoverboard. I am very pleased with the purchase, interaction, price, and quality of these cells, and would recommend them to anyone.
Good price glad they where in case's to protect them works great
They're great! The delivery made 2 days before expected, and they came with this Handsome Carrying Case. 😊👍
They're great! The delivery made 2 days before expected, and they came with this Handsome Carrying Case. ????
Awesome pricing! Thank you 👍
Awesome pricing! Thank you ??
Rebuilt 3 dead tool batteries with Samsung 25R 18650 cells using a Kweld spot welder. Replaced 1300 mAh 20A cells with 2500 mAh 20A cells - better than new. Tools are happy.
Batteries came well packaged. They are true Samsung batteries 🔋 will be purchasing batteries from this supplier for future projects.
Batteries came well packaged. They are true Samsung batteries ?? will be purchasing batteries from this supplier for future projects.
Very Reliable battery
Built an ebike battery with these cells. They are working great. High quality cells.
Authentic batteries at a good price! Not to mention fast shipping.
Bought these batteries for my headlamp, they work amazingly, recharge capacity close to stated capacity. I would buy again.
What can I say the 25r is a great battery,its the workhorse of the vape game. And I.M.R. delivered quickly and on point as far as price. I always order from these guys because they know batteries and they ship fast.
What can I say the 25r is a great battery,its the workhorse of the vape game. And I.M.R. delivered quickly and on point as far as price. I always order from these guys because they know batteries and they ship fast.
Have been working with these batteries for a couple of days, awesome performance, great weight, good discharge rate...
The batteries came as detailed in the invoice. Thanks for the extras. Charged up promptly from 50%.
I love these 25r. They are always dependable.
I'm very happy with all of my batteries! Thanks!
Product comes just as advertised. Great price, quick shipping... Overall very satisfied!
Yes, buy them. These batteries are excellent in Mechs and Regulated mods. Keep em married and they'll love you forever.
Seems you really never know what you're going to actually get nowadays with batteries. They'll say a million amp hours but really only 2 amp hours. These batteries last literally 3 times longer in my vape than a previous supposed 5,000mAh battery. AAAA+ Purchase!