It's not pretty but it works.
Key Features
- High 3000mAh capacity for longer runtime
- 15A continuous output for demanding power needs
- Consistent energy delivery under sustained load
- Designed for durability and dependable service life
- Backed by trusted Samsung engineering
Overview
The Samsung 30Q 18650 battery delivers dependable power where both capacity and output matter. Featuring a robust 3000mAh capacity and a strong 15A continuous discharge rating, this cell provides stable, efficient energy for applications that require reliable performance and long-lasting power.
Applications / Uses
- High-performance flashlights
- Portable power solutions
- DIY battery pack projects
- Electric tools and equipment
- Energy storage applications
SPECIFICATIONS
| Manufacturer | Samsung SDI |
| Model | INR18650-30Q |
| Size | 18650 |
| Positive Terminal | Flat Top |
| Nominal Capacity | 3000mAh |
| Continuous Discharge Rating | 15A |
| Nominal Voltage | 3.6V |
| Maximum Voltage | 4.2V |
| Discharge Cut-Off Voltage | 2.5V |
| Protected | No |
| Rechargeable | Yes |
| Approx. Dimensions | 18.33mm × 64.85mm |
| Approx. Weight | 48g |
| Data Specification Sheet | Samsung 30Q 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 629 reviews.
I made a good choice buying these cells; I breathed new life into my power tool batteries.
Love these batteries! Thank you for making the order right.
Great Quality. The price seems to be much higher than before, but I got a good deal. Thank you.
Very good quality, plan to purchase more soon.
Great batteries and charger
Fast shipping good prices
Long lasting.
Great batteries. They arrived on time and now i only Ave to change batteries once a day instead of 3 to 4 times.
Good product. Will buy again
The photo online has Samsung printed on the battery. The ones I received do not. I ordered these ones specifically because they were name-brand and want that assurance they are quality and not generic stuff like on Amazon. All the other lettering matches the pictures online so hopefully they are legit Samsung ones.
These are my favorite vape batteries. Last all day. Also, shipping was faster than expected, since I ordered over the holidays!
Quick shipping as always and the free 2x case! Once these were topped off they went to work in my Hanklights. 100/10 would recommend!
These batteries work great.
Great battery!
Great battery.
A few thingz being made, A few thingz I had 2 wait, t( '.' t) A thing or 2 getz an upgrade, 1 will completely raise from the dead. Mad Scientist, on duty! 🤪 Steve B. CaCaMoRSeLz
Best batteries in have used they last forever hundreds of daily cycles
Came quick and works way better than the fake "10000 mAh" pair I got from Amazon.
Converted and old Dust Buster from Nicads to Lion cells.
These cells were listed at a sale price... so I tried them out! Thay have completely exceeded my expectations. I am using this pack to run LED lights in a shed. The lights are super bright (I don't remember the wattage) and the battery pack lasts for a very long time. They are super easy to take in and recharge.
Got exactly what I ordered. Thank you
Replacing laptop battery New pack was to expensive for old laptop Wanted challenge to repair myself By making a new pack Thanks for your help…Dan
I tested these in a charger-discharger. They actually went 200 MAH beyond their rated MAH.
Batteries came with plastic protective cases as well as card stock paper wraps for individual storage. I tested all batteries with my voltage meter and all 48 of them were great. I will definitely buy more of these. The price was unbeatable and I received them in a week after I ordered them. I was really surprised how fast they arrived. I built a 36v 10ah battery with 40 of them and had 8 spares to use for something else. Great product!!
4 out of the 5 batteries worked. one of the batteries the voltage drops immediately like it was dead yet it was fully charged.
Great
I ordered 100 cells and 100/100 were good... I have ordered from other places and have come to expect a few bad cells out of every batch... Not the case here, will be reordering more soon
They charge up and work well
The battery worked as expected with a prompt delivery time and a competitive price
Everything good.
great batteries.
fast delivery
Git a couple new batteries for my vape, a Voopoo DragX 2 and they work beautifully, thank you!
Pretty good shit
Great product great value and works amazing and delivery was on time
Arrived well packaged. And quick delivery. Will def order again! Put on my flashlight. I ordered flat top should have been button top. But I made them with by spot welding button tops from other battery and Presto they work like charm! Thank you guys
Super fast shipping 10/10 recommend
Excellent!!
Great