Perfect replacement battery for the streamlight Protac with better life. Allot cheaper than the streamlight factory battery as well.
Key Features
- 3000mAh nominal capacity for balanced energy output
- Integrated PCB protection for electrical safety
- Button top terminal for extended device compatibility
- Stable 15A (8A PCB) continuous discharge capability
- Designed for long cycle life and thermal stability
Note: This is a button top protected 18650 battery which is longer than a standard flat top unprotected 18650 battery.
Note: Do not remove the clear protective wrap — doing so voids the warranty and may compromise the cell's protection circuit.
Overview
The Samsung 30Q 18650 Button Top Protected Battery combines high energy density with integrated safety circuitry. Featuring a 3000mAh capacity and a 15A (8A PCB) continuous discharge rating, this cell delivers reliable, consistent power while benefiting from PCB protection against overcharge, over-discharge, over-current, and short circuit conditions. Due to the protection circuit and added insulation, this battery is longer than standard flat top 18650 cells.
Applications / Uses
- High-performance flashlights
- Portable power banks
- Rechargeable electronic equipment
- Battery-powered instruments
- Low-to-moderate drain power systems
SPECIFICATIONS
| Manufacturer | Samsung SDI |
| Model | INR18650-30Q (30Q) |
| Size | 18650 |
| Positive Terminal | Button Top |
| Nominal Capacity | 3000mAh |
| Continuous Discharge Rating | 15A Cell Max (8A PCB) |
| Nominal Voltage | 3.6V |
| Maximum Voltage | 4.2V |
| Discharge Cut-Off Voltage | 2.5V |
| Protected | Yes (PCB) |
| Rechargeable | Yes |
| Approx. Dimensions | 18.4mm × 69.8mm |
| Approx. Weight | 48.25g |
| Data Specification Sheet | Samsung 30Q Datasheet |
⚠ Important Safety Warnings
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.
- Intended Use: This battery is designed for use in flashlights, headlamps, and similar devices that require a button top configuration. Ensure compatibility with your device before use.
- Protection Circuit Limitations: While the protection circuit provides additional safety, it cannot prevent damage caused by misuse, including exposure to liquids, extreme heat, or physical damage.
- Storage & Transport: Always store batteries in protective cases to prevent accidental contact with metal objects (e.g., keys, coins, tools) that can cause a short circuit. Do not store loose batteries in pockets, bags, or other uncontrolled environments.
- Inspection: Do not use if the battery is dented, leaking, bulging, or if the outer wrapper or button top is damaged.
- Charging: Use a smart charger specifically designed for button top protected batteries. Do not exceed the battery's voltage and current specifications. Never leave the battery unattended while charging.
-
Prohibited Activities:
- Do not expose the battery to water, fire, or high heat.
- Do not modify, puncture, crush, or attempt to disassemble the battery.
- Do not use the battery if it becomes unusually hot during use or charging.
- 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: 4.5 / 5 from 23 reviews.
Came on time and as advertised
Came in reasonably early and worked fine when I charged it
Great shop. Tough to source the right spare batteries for dive lights, but this shop makes it easy. That they sell high quality Samsung batteries of different types makes it even better.
Purchase was fine,carefree,thanks
Website said it would fit the flashlights, they do not. Ended up just buying new flashlights.
Great battery
Fantastic battery
Great product!
Batteries work
Trips protection under rated usage.
Product arrived correctly.
Hate to be the first bad review, but the cells I got are faulty. So far 2 of the 5 have failed testing and I don't hold much hope for the remaining three. Something trips the protection at very low load well below 10A on what's supposed to be a 15A cell. Too bad.
Works good
Works great in a Streamlight ProTac 2L-X!
Ordered (6) batteries and they were here in less than two weeks. The packaging was solid, and all labeling was clear, which definitely helped with transit. It was a top-rate experience from purchase to receipt.
I purchased 2 for use in a new Streamlight ProTac 2L-X that I bought for work. The fit is perfect! (There was an unpleasant rattle with the 2 CR123's that came with the light.) It's nice knowing that I can just swap batteries instead of having to plug it in and wait for a recharge.
Always reliable.
My new
Like it an it works good
Great
good batteries
They get the job done right.