These batteries are too short for what I need them to do so they will not work and what I’m trying to use them for so now I’ve spent all this money and now I can’t use these useless things
Key Features
- High-capacity 3500mAh lithium-ion cell for extended runtime
- 8A continuous discharge rating (1C) for sustained output
- Button top terminal for compatibility with recessed contacts
- Stable voltage profile with 3.6V nominal output
- Designed for long cycle life with reliable capacity retention
Overview
The Samsung INR18650-35E is a high-capacity 18650 lithium-ion battery engineered for applications requiring long runtime and consistent power delivery. With a nominal capacity of 3500mAh and an 8A continuous discharge rating, this cell provides dependable performance while maintaining excellent energy density and thermal stability.
Applications / Uses
- High-output rechargeable lighting systems
- Portable power banks and backup packs
- Low-to-moderate drain electronic devices
- Battery packs requiring button top cells
- Consumer and industrial rechargeable equipment
SPECIFICATIONS
| Manufacturer | Samsung SDI |
| Model | INR18650-35E (35E) |
| Size | 18650 |
| Positive Terminal | Button Top |
| Nominal Capacity | 3500mAh |
| Continuous Discharge Rating | 8A Max Continuous (1C) |
| Nominal Voltage | 3.6V |
| Maximum Voltage | 4.2V |
| Discharge Cut-off Voltage | 2.5V |
| Protected | No, Unprotected |
| Rechargeable | Yes |
| Approx. Dimensions | 18.5mm × 67.0mm |
| Approx. Weight | 49g |
| Data Specification Sheet | Samsung 35E 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: 4.7 / 5 from 15 reviews.
They last a long time in my Qodosen DX 286!
I like the batteries, shipping wasn’t too bad, but they were out of stock and I filled out a form, to be notified when they came back in stock. If I hadn’t checked the web page that day I would have missed them.
Excellent batteries. Good price. Shipping great.
Batteries work as expected will buy more later. Thank you for also throwing in a case to carry the batteries
These batteries far surpass the original ones that came with my favorite small flashlights in terms of increased actual light output, longevity of charge and actual rechargeability. The batteries have a simple, plain generic appearance, but they are clearly made to a higher standard than any I have tried thus far.
Batteries perform well in cold environments.
Fantastic customer service! Thank you.
Very good battery for flash light.
Batteries were as described, maH ratings were accurate. Best price I could find!!!!!
Excellent quality batteries! Make sure you get battery holders with Springs on the negative side or they may not fit due to the added length of the "button top protection circuit" adds. Approx 2-5/8" or 67.20mm comfortably. One thing I really like aside from the battery itself is they come in a nice plastic case (2 to a case) to protect them instead of thin individual paper boxes as I've received with other batteries. This may be 18650 Battery's packing or Samsung, either way it's a much better way to protect them during storage which I keep in a vented ammo box Justin Case. Great product! Great supplier w/quick ship too!
great transaction
took long time to charge but all were good batteries
This battery is 6x better than the battery that came with my device, a real upgrade!
Zero complaints, work as they should.