Amongst the best 18650 high current batteries.
Key Features
- 3000mAh nominal capacity for extended operating time
- 15A maximum continuous discharge capability
- Stable INR lithium-ion chemistry for consistent output
- Flat top design suitable for custom battery assemblies
- Designed for reliable performance over repeated cycles
Overview
The Samsung 30Q 18650 battery is a high-performance lithium-ion cell engineered to deliver a balanced combination of capacity and sustained current output. With a 3000mAh capacity and a 15A continuous discharge rating, it provides dependable energy delivery for applications that demand stability, efficiency, and long-term reliability.
Applications / Uses
- High-output LED flashlights
- Custom battery pack assemblies
- Portable power banks
- Electric mobility and light EV systems
- Battery management system (BMS) projects
SPECIFICATIONS
| Manufacturer | Samsung SDI |
| Model | INR18650-30Q |
| Size | 18650 |
| Positive Terminal | Flat Top |
| Nominal Capacity | 3000mAh |
| Continuous Discharge Rating | 15A (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 | 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 or box.
- 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 use in devices such as e-cigarettes or vaporizers.
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What is Thermal Runaway?
- A dangerous chain reaction where heat generated by a failing battery causes it to overheat further, potentially leading to fire or explosion.
- Causes: Overcharging, short circuits, physical damage, or exposure to high temperatures.
- Prevention: Use a smart charger, avoid physical damage, and store batteries in a cool, dry place.
- Storage & Transport: Always store batteries in protective cases or boxes 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. These are signs of internal damage or instability, and continued use could result in failure, fire, or explosion.
- Charging: Use a smart charger designed specifically for lithium-ion batteries and ensure that the charger's voltage matches the battery's specifications. Never overcharge, over-discharge, or leave unattended while charging.
- Prohibited Activities: Do not short circuit, modify, puncture, crush, expose to liquids, or solder directly onto the battery (spot weld only).
- Emergency Response: If a cell shows signs of thermal runaway (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 combustibles. Lithium-ion cell fires are Class B fires — use an ABC/dry-chemical extinguisher, or douse with large amounts of water to cool the cell and prevent spread. 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 for lithium-metal batteries, not lithium-ion.) For any fire beyond a single small cell, evacuate and call emergency services.
Disclaimer
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.
Customer Reviews
Overall rating: 4.8 / 5 from 706 reviews.
Im surprised how long these batteries last, and the quality is Top notch.
18650 batteries fit perfectly into my 20V battery pack in my WORX blower. All 5 batteries held the exact same voltage when charged. Have been using the blower on the same charge for may projects. A lot better battery than WORKX's factory ones. Have a lot of power tools and will order replacements when other tool batteries die. Thanks
They work great. I made my first battery pack with these!
Bueno
Works well!
I used these batteries to repair a m18 Milwaukee battery back. So far they spot welded fine and fixed my battery pack.
Replacement worked great.
Great, quality cells. I've used imrbatteries for more than 5 years. I always get authentic cells and always get exactly what I ordered. Great prices and fast shipping.
Needed some fresh batteries for my weapon light and these are what they came with well worth the purchase!!!
These Samasung batteries are made strong. They get the job done whether it be big or small. 3000mAh capacity and 15A no job is too hard. These are tried and true batteries. The prices are super low compared to other online shops. Thanks IMR. I am definitely buying more soon.
Made this wooden light decor using the Samsung 30q
I rebuilt a DeWalt battery pack. It was a tight fit - but it worked! Cheers!
Work great so far.
Love these batteries. They last awhile and are quick to charge. I label them so I can keep the pairs together so I don't get them mixed up. Will definitely order again, I love this website! Great prices and fast shipping.
Very nice
Great
Fast shipping great company
Direct replacement into my Ispire and works better than the original. Pleased to have purchased these Samsung batteries!
These batteries are perfect for my radiomaster pocket to fly FPV drones and simulators! They are very cheap and what you should expect. Although they aren't one of the best, top of the line batteries, the performance is great for its price. It has high current and a high mAh capacity. This battery works as expected and can always be a trustworthy cell.
Great, even come with battery holders!
Perfect fit and power for my battery rebuilds. Holds a charge like new
Excellent batteries
Work perfect in my vacuum battery/destructive anticonsumer bms replacement
I ordered 6 Samsung 30Q 18650 batteries. it only took 7 days from when I clicked purchase to them sitting on my doorstep. these work great for high power flashlights. couldn't be happier
Buying second time. The batteries are great and shipping is fast... Thanks!
Fantastic! When I graded mine, I usually got MORE than the advertised capacity by a small margin. Very good and works well in my headlamp.
Got my 30Q's powering my baby. It's a convoy s2+ with a rbg switch and these batteries have FANTASTIC run time!!!!
These Samsung 18650 3000mAh are high quality battery cells with honest capacity rating. I purchased 20 cells to make 2S2P and 2S1P battery packs for 1/16 scale radio control tank. The 2S2P pack can run the tank for a whole days and can be fully recharged in less than 2 hours with an intelligent charger. Very, very happy with the purchase.
I wired these up to test them before I had them packaged up nicely and they performed exactly as expected. Quite nice cells at an excellent price point.
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
Incredibly fast shipping from a source I trust. The batteries arrived quickly.
They last for long time I would buy again
My go to.
Great batteriez
Batteries made it in promptly, and well packed.
For my firefly
Thanks!