The Samsung 35E protected 18650 battery delivers dependable, long-lasting power with enhanced safety built in. Featuring a generous 3500mAh capacity and an integrated protection circuit, this button top cell is ideal for applications that require controlled output, extended runtime, and added electrical protection. Its longer length should be considered when replacing standard flat top cells.
| Manufacturer | Samsung SDI |
| Model | INR18650-35E |
| Size | 18650 |
| Positive Terminal | Button Top |
| Nominal Capacity | 3500mAh |
| Continuous Discharge Rating | 5A (PCB) / 8A (Cell) |
| Nominal Voltage | 3.6V |
| Maximum Voltage | 4.2V |
| Discharge Cut-Off Voltage | 2.65V |
| Protected | Yes (PCB) |
| Rechargeable | Yes |
| Approx. Dimensions | 18.6mm × 69.8mm |
| Approx. Weight | 50.53g |
| Data Specification Sheet | Samsung 35E Datasheet |
While this battery is equipped with built-in protection circuitry to help prevent overcharging, over-discharging, and short circuits, improper handling or misuse can still result in FIRE, EXPLOSION, or THERMAL RUNAWAY, causing personal injury or property damage. Users must read and follow all safety guidelines before purchase and use. Click here to review the full safety guidelines.
IMR Batteries 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 product warnings and safety guidelines are effectively communicated to their customers. Some cells are sold in bulk packaging and are not individually packaged. Resellers must provide appropriate packaging for each individual cell sold and must not distribute cells loose, unprotected, or without a proper storage box or case.
Product compatibility is the sole responsibility of the customer. IMR Batteries does not guarantee compatibility with any specific device or application. We are not responsible for the design, assembly, performance, or safety of any battery pack constructed using our cells. It is the customer’s responsibility to ensure proper cell matching, protection circuitry, configuration, and safe construction practices.
Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.
Overall rating: 4.3 / 5 from 40 reviews.
Like or dislike a battery?! Come on... I think these 18650 batteries are the best available to civilian consumers at this price point regarding capacity, performance, and material quality. Internet search showed IMR had the best price at time of purchase.
I ordered two Samsung 35E 18650 3500mAh 8A protected button-top batteries from IMR Batteries, to replace some exhausted EagTac 18650s for an EagTac T25C2 flashlight. The Samsung batteries are a couple mm longer than my old EagTac batteries, which made me cautious the first time I closed up the flashlight, but I had no issues. The new batteries have worked fine for the flashlight these past three weeks. I had a good experience with IMR Batteries: competitive prices, easy online order process, easy pick-up. They provided a basic plastic carrying case with the order (thank you!). Batteries fully charge to 4.2 V. I would order from IMR Batteries again.
These run my old-school Mag ROP incan alot better than the old cells I was using. Great cells!
Purchased 4 of these cells for the Nitecore TM39. Seem pretty good so far? IR on 3 of the 4 have measured between 100-almost 200 mOhms .Only one measures below 100. They’re wrapped well! Hope they hold up well..?
They are great batteries, I have had no issues. I love that they come in a plastic carrying case!
High quality cells, exactly what I needed. Packaging was above and beyond. Highly recommended
I got this to replace an OEM battery on a new emergency radio. This battery completely outperformed the original one.
I have a sound machine that runs on these protected button cells. The unprotected button cells are not long enough and wonder why they did not make it with the protection board built in the sound machine. These batteries are hard to find and am glad I finally found a great site to buy my lithium batteries. Have great knowledge of these batteries and know how to use and handle these batteries. Thanks IMR!
I recently ordered the Samsung 18650 rechargeable battery. I received it promptly in the mail. It was packaged well. The battery is very strong and it was fully charged in a good amount of time. I was quite satisfied with this product.
I got these for a battery bank that takes 8 of them. With these, I will have long battery life. Thanks IMR Batteries !
Quality products, fast shipping, good price. Ships from domestic company which is a big bonus for regulations.
Works good, but needs better labeling. These batteries are being used like AA batteries, but have insufficient labeling. This is a problem shared by most of these types of batteries, some are better than others, but this one is mediocre with the labeling. Everything else about it is great. And I will buy more.
The batteries arrived promptly and were of a much higher quality than the ones that originally came with my dive light. Highly recommended.
One of the few sources online for this battery. All worked fine. Deliver was on time. Thanks
I used 4 off these in a high powered scuba light(18000 lumens) and they out performed all previous batteries.
Purchased these after being hugely disappointed by some cheap batteries I purchased. I tested several and they were very close to the rated capacity. These are a very tight fit in one flashlight I have, but they are fine in all my others. Very happy with my purchase.
Thye work and havent had any issues so far.
The batteries are performing as expected. I bought from IMR because they have a reputation for selling quality batteries, and chose Samsungs because they also have a good reputation. It's important to me that lithium-ion batteries are well-made.
Will buy again, no question! A consistently high performing battery in a semi-remote location. This battery has been trusted to perform throughout many charge cycles without danger of over or under charging, or electrical conditions that can lead to fire in the remote building.
I never received my batteries, they were shipped by ups but delivered by usps and I don’t know what happened or where but they never ended up in my mailbox like USPS said they did
I run a scuba diving charter we put these batteries in lights on our helmets. Each battery is needed to last on its highest output for a solid 90 minutes. So far your batteries has been up to the test. I can get pictures of our operation and the use of the light . So far we are impressed. Of course Tooth fairy charters is always looking for sponsorship to sport your batteries
It was the wrong size battery, is there a way I can return them?
very pleased
Their batteries are great but the shipping took a long time. They should never use USPS for shipping.
Ordered 3500 mAh Samsung batteries. Batteries that arrived do NOT say Samsung and are 3400 mAh NOT the advertised 3500 mAh I ordered.
Samsung 35E 18650 3500mAh 8A Battery - Protected Button Top
Store owner replied: Thank you for your feedback. The batteries you received are genuine Samsung SDI 35E cells. Due to updated manufacturer labeling and CCC regulations, Samsung now marks many cells with the minimum rated capacity rather than the nominal capacity. The Samsung SDI 35E remains a 3500mAh nominal capacity cell with a 3400mAh minimum rated capacity per the manufacturer's datasheet. Samsung SDI also now uses "SDI" markings on many current production cells rather than printing the Samsung name. We will be updating our product photos to better reflect the current manufacturer markings.
Superb packaging. Exactly what I ordered. My new batteries last 3x longer than the generic batteries that came with my UV flashlight. Thank you!
I don’t believe there’s anything wrong with your batteries, but they will not fit my equipment even though it says they do fit on the Internet. I would be more than glad to send them back to you. But you tell me that there’s no return policy at all because of this I will never do business with this company again. I tried to help out individual businesses by not going to Amazon and making the rich richer, but I see that It is the best route to go.
It would be good if it stated in the description (without having to rely on specs) that these batteries are longer than the unprotected batteries. It would have made me look at the specs to determine they would not fit in my headlight. I realize that not looking at the specs was my fault, but I had assumed 18650 was a standard size like AA or AAA. It turns out that is the size of the cell which is meaningless for a consumer. After this incident, I have done more research to understand why the 18650 number is the cell size and not a physical finished product size. However, this was after receiving my first order, charging the batteries, and then finding they don't fit. It was disappointing and a waste of money. I had seen before I bought these that the flat top batteries are longer than the button top and if I had seen a note that the protected batteries are longer as well, I would have looked at the specs again. I just was not expecting to have to look at specs to purchase a battery for my headlight.
Charger & batteries work great!
Exactly what I needed. Authentic and pretty quick shipping. Zero complaints
havent used em yet but they charged up fine on my new nitecore
exactly as advertised. rapid shipping. batteries & charger (reviewed elsewhere) function perfectly. IMR will be my battery store in the future.
Fast shipping!
Charged quickly, and works fine.
Wrong battery too big
These are nice batteries. I use them for all of my flashlights. Delivery was prompt.
Purchased 4 of these cells for the Nitecore TM39. Seem pretty good so far? IR on 3 of the 4 have measured between 100-almost 200 mOhms .Only one measures below 100. They’re wrapped well! Hope they hold up well..?
Purchased 4 of these cells for the Nitecore TM39. Seem pretty good so far? IR on 3 of the 4 have measured between 100-almost 200 mOhms .Only one measures below 100. They�re wrapped well! Hope they hold up well..?
One of the few sources online for this battery. All worked fine. Deliver was on time. Thanks
Purchased these after being hugely disappointed by some cheap batteries I purchased. I tested several and they were very close to the rated capacity. These are a very tight fit in one flashlight I have, but they are fine in all my others. Very happy with my purchase.
