Product Description
Experience the perfect balance of capacity and power with the Samsung 30Q 18650 Battery 2Pcs (Model: INR18650-30Q). Widely regarded as the "gold standard" for 18650 cells, the Samsung 30Q delivers an impressive 3000mAh capacity paired with a stable 15A continuous discharge (up to 25A pulse). This legendary battery has earned its reputation as one of the most versatile and reliable cells on the market, offering a perfect middle ground between high capacity and medium power output. Whether you are powering a high-performance running a high-lumen flashlight, or building a custom DIY battery pack, the Samsung 30Q provides consistent, safe, and long-lasting energy. This listing includes two individual cells (not pre-assembled), giving you the flexibility to configure them in series or parallel for your specific project needs.
Key Features
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High Capacity (3000mAh): Offers 3000mAh of reliable capacity, providing 20% more runtime than standard 2500mAh cells (like the 25R), keeping your devices running longer between charges.
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Stable 15A Continuous Discharge: Delivers consistent 15A continuous current, ideal for medium-drain applications like flashlights, and light power tools. Supports up to 25A pulse discharge for short bursts of higher power.
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Perfect Balance: Strikes an excellent balance between high capacity and medium power output, making it one of the most versatile 18650 cells available today.
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Legendary Samsung Quality: Premium-grade INR18650-30Q cells from one of the world's most trusted battery manufacturers, ensuring exceptional cycle life, safety certifications, and consistent voltage stability.
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Flat Top Design: Standard flat top configuration, compatible with most battery holders, spring-loaded contacts, and DIY battery pack builds.
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2-Pack Value: Supplied as two individual cells, allowing you to build a 2S series pack (7.4V), a 1S2P parallel pack (6000mAh), or replace worn-out cells in pairs for balanced performance.
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Proven Track Record: One of the most highly-rated and widely used 18650 cells in the flashlight communities, trusted by enthusiasts worldwide.
Technical Parameters
Applications
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High-Lumen Flashlights & Headlamps: Powering tactical flashlights, searchlights, and headlamps that require sustained brightness and long runtime.
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Light to Medium Power Tools: Upgrading cordless screwdrivers, mini drills, and other handheld power tools for longer work sessions.
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DIY Battery Packs: Building custom 1S2P, 2S1P, or 2S2P battery banks for robotics, drones, or portable power stations.
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Outdoor & Camping Gear: Powering portable fans, heated jackets, camping lights, and other outdoor electronics.
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Portable Power Stations: Building compact yet powerful battery banks for camping, emergency power, or off-grid applications.
FAQ
Q1: Does '2Pcs' mean it's a 2S battery pack assembled together?
A: No. "2Pcs" means you will receive two separate individual cells. You will need to assemble them in series (for 7.4V), parallel (for 6000mAh), or a specific configuration based on your device's requirements.
Q2: How does Samsung 30Q compare to Samsung 25R and EVE 25P?
A: The Samsung 30Q offers higher capacity (3000mAh) compared to the 25R and 25P (both 2500mAh), providing 20% more runtime. However, its continuous discharge is lower (15A vs 20A on 25R and 30A on 25P). Choose the 30Q if you prioritize longer runtime over maximum power output.
Q5: Does this battery have a protection circuit (PCB/BMS) built-in?
A: No. The Samsung 30Q is an unprotected flat-top cell. It relies on the external device or a BMS (Battery Management System) to handle overcharge, over-discharge, and short-circuit protection.
Q6: What charger should I use?
A: Use a dedicated intelligent Li-Ion charger designed for 3.6V/4.2V cells. Ensure the charger supports the correct voltage for your specific pack setup (e.g., 1S charger for single cells, 2S charger for 2 cells in series, etc.).
Q7: How do I identify positive and negative terminals?
A: The flat top (the side with the Samsung logo and model number) is the Positive (+) terminal. The bottom (the side with the shiny metal casing and a slight indentation) is the Negative (-) terminal.
Q8: Is the Samsung 30Q still a good battery in 2025?
A: Absolutely. Despite being on the market for many years, the Samsung 30Q remains one of the most popular and trusted 18650 cells due to its proven reliability, excellent safety record, and perfect balance of capacity and power. It continues to be a top choice for flashlight enthusiasts, and DIY builders.
Q9: Is this battery safe for high-power applications?
A: Yes, when used within its rated limits. The Samsung 30Q is designed for medium-drain applications. It is safe for regulated up to approximately 80-100W and for flashlights up to moderate lumen outputs. For higher power applications, consider cells with higher discharge ratings like the Samsung 25R or EVE 25P.
