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KEY SPECS · CELL INSIDE: SAMSUNG SDI INR18650-35E
SOURCE [1]- SIZE
- Not stated by manufacturer
- finished size · cell inside: Ø18.55 × 65.25 mm, max.
- CAPACITY
- Not stated by manufacturer typ.
- 3,350 mAh min.
- 0.2C to 2.65 V, 23°C
- CURRENT
- 8 A
- cell inside · max. continuous
- condition not stated by manufacturer
- TEMPERATURE
- −10 to 60 °C
- cell inside · discharge · cell surface
- cell inside · charge 0 to 45 °C · cell surface
Samsung 35E 18650 3500mAh 8A Button Top Battery – High-Capacity Lithium-Ion Power Cell
Overview
The Samsung 35E 18650 3500mAh 8A Button Top Battery is a high-capacity lithium-ion rechargeable power cell, designed for long-lasting performance in moderate-drain applications. With a 3500mAh capacity and an 8A continuous discharge rate, this battery is perfect for devices requiring extended runtime. Its button top design ensures compatibility with flashlights, battery packs, and consumer electronics that require a raised positive terminal.
Key Features
High Capacity: 3500mAh ensures extended runtime before needing a recharge.
Moderate Discharge Rate: 8A continuous discharge, ideal for low-to-medium-drain applications.
Lithium-Ion Chemistry: Provides stable, efficient, and reliable power delivery.
Rechargeable & Durable: Supports hundreds of charge cycles with minimal capacity loss.
Button Top Design: Ensures compatibility with flashlights and devices requiring raised terminals.
Specifications
| Specification | Details |
|---|---|
| Brand | Samsung |
| Model | 35E (Button Top) |
| Battery Type | 18650 |
| Capacity | 3500mAh |
| Nominal Voltage | 3.6V |
| Full Charge Voltage | 4.2V |
| Discharge Cutoff Voltage | 2.65V |
| Continuous Discharge Rate (CDR) | 8A |
| Rechargeable | Yes |
| Protected | No (Unprotected cell – use with proper safety measures) |
| Cycle Life | ~300+ charge cycles |
| Button Top | Yes |
| Diameter | 18.6mm (including button top) |
| Length | ~69mm (including button top) |
| Weight | ~48g |
Applications
The Samsung 35E 18650 3500mAh Button Top Battery is widely used in moderate-drain electronic devices, including:
Flashlights & LED Devices – Ideal for high-efficiency LED torches requiring a button top battery.
Battery Packs – Frequently used in custom-built energy storage solutions.
Consumer Electronics – Compatible with cameras, remote controls, and various household electronics.
Medical Devices – Provides stable and long-lasting power for essential healthcare equipment.
Portable Power Banks – Ensures steady power delivery for backup energy storage solutions.
Safety Guidelines & Warnings
IMPORTANT SAFETY NOTICE ️
Lithium-ion batteries require proper handling and knowledge to ensure safe operation. Failure to follow safety guidelines may result in fire, explosion, serious injury, or property damage.
General Safety Guidelines
Only purchase and use if you fully understand lithium-ion battery safety.
Always charge in or on a fire-resistant surface—never leave batteries charging unattended.
Use only a compatible smart charger designed specifically for this type of battery.
Store batteries in a protective case—never carry them loose in a pocket, bag, or purse.
Keep away from metal objects (keys, coins, tools) to prevent short circuits.
Use only within manufacturer-listed specifications and in protected battery packs.
Resellers must provide these warnings to all customers.
Prohibited Uses & Handling
DO NOT use this battery in e-cigarettes, vaporizers, or similar devices.
DO NOT mix old and new, or used and unused batteries.
DO NOT short circuit, puncture, cut, crush, incinerate, or modify the battery.
DO NOT use if the battery wrapper is torn or damaged in any way.
DO NOT overcharge or over-discharge—this can lead to battery failure.
DO NOT expose the battery to liquids, extreme heat, or direct sunlight.
DO NOT solder directly—only use spot welding for battery pack assembly.
User Responsibility & Risk Acknowledgment
- The user assumes full responsibility for proper handling, charging, and storage.
- Misuse or mishandling may result in serious injury or damage.
- No guarantee of compatibility with any specific device is provided.
- Usage of this battery is at your own risk.
By purchasing and using the Samsung 35E 18650 3500mAh 8A Button Top Battery, you acknowledge and agree to follow all safety guidelines. Failure to comply may result in hazardous consequences. Prior knowledge of lithium-ion battery safety is required before purchase.
Stay safe and handle responsibly.
Customer Reviews
Overall rating: 4.9 / 5 from 179 reviews.
Figure out how to lower your prices or have free shipping so you can compete better with amazon!
Love these batteries!
Great customer service. Quality batteries and fast shipping.
Works much better than the original batteries in my Choyong LC90. It gives longer play time on internet radio stations.
Ordered six 18650 Samsung batteries and a charger (to ship to Canada). Everything was received in excellent condition and all works well. I loved that there was no duty or taxes to pay as well! Thank you!
So far they seem to be good quality.
Just as expected
It came on time quickly, Hopefully they're the real samsung.
Works perfectly, exactly as expected!
I never knew there were 18650 batteries til I got these solar lights, when one failed I took it apart, to find them. I looked online for batteries and found your store. So I have two sets that I keep in a south window, cause I need them on my north side where there is no sun. I alternate on the days when there is no sun, so I always have some charged. I love the very fast, efficient delivery. Very happy with this company. 😊
Batteries were shipped quickly and are working well. Thanks :-)
Put the battery in a flashlight replacing 3 AAA batteries. Works great
Thanks
Customers just love these. The runtime is awesome!!!!!
These are some of the best batteries on the market. I use them in a headlamp almost every day and they put the stock batteries to shame.
Exactly what I ordered and fast shipping. Definitely a repeat.
Batteries are powering a zbits Ham radio transceiver that transmits 5 watts and pulls 3 amps from the batteries. The transceiver needs 6-9 volts to run.
I use these batteries in my solar lights, have 2 sets I alternate them cause I put them where there is no sunlight, I put them in a sunny window.
Long lasting
The batteries have great capacity and work great.
Good Stuff!
Perfect fit for the Streamlight on my AR-15.
They are batteries. What's to say. They work OK
Great batteries. Great store.
Just as ordered plus a bonus
Works great, even came in a little storage box!
Works with radiomaster pocket
Purchased four batteries along with charger. The batteries arrived quickly and was well packaged. No problems. I will do business with this company in the future.
Great batteries, great vendor. Quick shipping too. Will definitely buy from again.
Full capacity as promised
These batteries are perfect for my needs. Ordering was simple and they were delivered ahead of schedule. I ordered 20 and they came in packs of two in a nice plastic hard case. All they needed was a quick charge and they were ready to go! I will definitely order again!
Batteries were well packed and shipped promptly. Function test was good.
Excellent
I wanted higher mah rated batteries for some flashlights I bought and was (fortunately) warned about the bogus rated batteries on Amazon. These arrived in a nice case and seem very well constructed. While I have no way to measure the actual capacity of these vs the originals, the fact that they are Samsung makes me feel better about them.
Last a long time in my Qodosen DX 286 Shortwave receiver.
Holding charge well.
It is very difficult to find these 18650 batteries that are not junk. Almost all of the 18650 replacement batteries on the market today are total garbage. These Samsung 35E (3500 MAH) button top batteries are very good. I tested them on reliable electronic equipment and found that they come very close to the MAH rating that they say they are. It is important to note that when you test these batteries several times the MAH readings will not be exactly the same every time. However, they will be very close in results and this is normal to have these readings fluctuate. I did find during testing that the discharge cutoff voltage is 2.8 volts which is typical of an 18650 battery (the website says 2.5 volts). My test readings are in the review photos for (MAH) but I do not have a photo of the cutoff voltage at this time. I needed some reliable and high quality batteries for my decorative Solar LED Lanterns and these are perfect for them and they perform flawlessly. And as the website says be sure you select the right battery for your application as to not have any safety or performance issues. It also should be noted that the seller ships quickly and the batteries are well packaged and protected to reduce the possibility of damage.
We needed these specific batteries for a project, and the 18650 Battery Store had them in stock, at a great price. The order was painless, and delivered promptly.
Thank you for a flashlight.