Samsung 30Q 18650 Battery 2Pcs - 3000mAh 15A High Capacity Medium Drain (INR18650-30Q)
Description
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
| Parameter | Value |
|---|---|
| Brand & Model | Samsung INR18650-30Q |
| Battery Type | Lithium-Ion (Li-Ion) |
| Size | 18650 (Diameter 18mm, Height 65mm) |
| Capacity | 3000mAh (Minimum 2900mAh) |
| Nominal Voltage | 3.6V |
| Full Charge Voltage | 4.2V |
| Cut-off Voltage | 2.5V |
| Continuous Discharge Current | 15A |
| Pulse Discharge Current | Up to 25A (not for continuous use) |
| Internal Resistance | ~15-20mΩ (Typical) |
| Positive Terminal | Flat Top |
| Protection Circuit | No (Unprotected Flat Top Cell) |
| Operating Temperature | -20°C to 60°C |
| Quantity in Package | 2 Pcs (2Pcs) |
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.
| Brand | Model | Capacity | Continuous Discharge | Best For |
|---|---|---|---|---|
| Samsung | 30Q | 3000mAh | 15A | Long runtime + medium power |
| Samsung | 25R | 2500mAh | 20A | High power (shorter runtime) |
| EVE | 25P | 2500mAh | 30A | Extreme power (shortest runtime) |
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.
Shipping and Returns
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Free Shipping: Enjoy free shipping on all orders over $65. For orders under $65, the shipping cost is $8.99.
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Delivery Time: Once shipped, orders typically arrive within 7–15 business days.
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Easy Returns: We want you to be completely satisfied. If you're not, you can return your product within 30 days of receiving your order. Please ensure the items are unused and in their original condition. For return instructions, please contact our support team.
Payment & Security
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Security
Forget the off-brand cells. These Samsung 30Qs deliver true capacity and discharge. My 2-pack arrived in perfect condition with matching voltages. They are my new standard.
I use these as my reference cells when testing flashlights. They perform exactly to the datasheet. 3000mAh, 15A CDR, low IR. Perfect for hobbyists who need consistency.
Powering my high-speed desk fan with a 30Q gives strong airflow for hours. The cell stays cooler than my LG HG2 under load. Samsung engineering is solid.
These cost a bit more but last. I've cycled them over 100 times and they still read over 2900mAh. My headlamp has never been happier. Genuine Samsung 30Q.
Finally bought some original 30Qs. The difference in my mod's battery life is significant. They stay balanced in dual-battery setups. Highly recommend for medium drain.
Refund Policy
OneAndes Return & Refund Policy
At OneAndes, we are committed to providing high-quality cylindrical lithium-ion batteries for your drones, vacuums, garden tools, and other power needs. If you are not completely satisfied with your purchase, we are here to help. Please read our full return policy below before initiating a return.
1. Return Window
You have 30 calendar days from the date you received your item(s) to request a return. Any return request submitted after 30 days will not be eligible for a refund or exchange.
2. Eligibility Conditions
To qualify for a return, all items must meet the following conditions:
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Condition: Items must be unused, undamaged, and in the same condition that you received them.
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Packaging: Items must be returned in their original packaging with all accessories, manuals, and protective covers intact.
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Proof of Purchase: A valid receipt, order confirmation email, or proof of purchase must accompany all returns.
Non-Returnable Items:
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Batteries that have been installed, used, or show any signs of wear.
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Items marked as “Final Sale” or “Clearance” at the time of purchase.
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Customized or special-order products.
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Gift cards.
If a returned item fails to meet these conditions, we reserve the right to deny the return or charge a restocking fee.
3. How to Initiate a Return
Follow these steps to return your product:
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Contact Us: Email our support team at support@oneandes.com with your order number and the reason for return. We aim to respond to all return requests within 24 hours on business days.
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Receive RMA: We will provide you with a Return Merchandise Authorization (RMA) number and return instructions. Do not ship any item without an RMA number.
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Pack Securely: Place the item in its original packaging, include all accessories, and clearly write the RMA number on the outside of the box.
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Ship to Our US Warehouse: Ship the package to the following address:
OneAndes Returns
10320 6th St
Rancho Cucamonga, CA 91730
USA*Important: Lithium-ion batteries are classified as hazardous materials (Class 9). Please follow the shipping guidelines provided in Section 4 below. We recommend using a trackable shipping service and purchasing shipping insurance, as we cannot guarantee receipt of your returned item.*
4. Return Shipping Costs
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Defective or Incorrect Items: If the item you received is defective, damaged in transit, or different from what you ordered, OneAndes will cover the return shipping cost. In this case, we will provide you with a prepaid return shipping label.
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Buyer’s Remorse / Non-Defective Returns: If you are returning an item for any other reason (e.g., no longer needed, ordered the wrong model), you are responsible for the return shipping costs. You must prepay the return shipping cost using a trackable carrier that accepts lithium batteries. We do not provide prepaid return labels for non-defective returns.
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Lithium Battery Shipping Regulations: By law, all returns must be shipped in compliance with applicable dangerous goods regulations. We will provide guidance on proper packaging and labeling. Failure to comply may result in carrier refusal, seizure, or additional fees. We are not responsible for returned items lost or rejected by the carrier due to improper shipping.
5. Refunds
Once we receive and inspect your return at our Rancho Cucamonga, CA facility, we will notify you via email of the approval or rejection of your refund.
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Approved Refunds: If approved, your refund will be processed to your original method of payment within 5 to 10 business days. Please note that depending on your bank or credit card issuer, it may take additional time for the credit to appear on your statement.
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Partial Refunds: In certain situations, only partial refunds may be granted:
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Items not in original condition, missing parts, or damaged for reasons not due to our error.
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Items returned more than 30 days after delivery (reviewed on a case-by-case basis).
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Non-Refundable Fees: Original shipping charges are non-refundable unless the return is due to our error (defective product or incorrect shipment).
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Restocking Fee: We do not charge a restocking fee for defect-free returns, but we may deduct the return shipping cost, which will be deducted from your refund.
6. Exchanges
We replace items only if they are defective or damaged upon arrival. If you need to exchange a defective item for the same product, please contact us at support@oneandes.com. Exchanges are subject to product availability.
If you ordered the wrong battery size or model, please follow the standard return process above and place a new order for the correct item.
7. Damaged or Missing Items
If your package arrives visibly damaged, please take photos of the package before opening and contact us immediately. We will work with the shipping carrier to file a claim and arrange for a replacement or refund. Damaged or missing item claims must be reported within 7 calendar days of delivery. For immediate assistance, you may also call us at (213) 316-8849.
8. Order Cancellation
You may cancel your order without penalty if it has not yet been shipped. To cancel, email us at support@oneandes.com as soon as possible. If the order has already been processed or shipped, you will need to follow the standard return process upon receipt.
9. Warranty
All OneAndes batteries are backed by a 12-month limited warranty against defects in materials and workmanship. This warranty does not cover damage caused by misuse, improper charging, unauthorized modifications, normal wear and tear, or use outside of manufacturer specifications. For warranty claims, please contact our support team.
10. Contact Us
If you have any questions about our Return & Refund Policy, please reach out:
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Email: support@oneandes.com
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Phone: (213) 316-8849 (Mon-Fri, 9 AM – 5 PM Pacific Time)
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Mailing Address: 10320 6th St, Rancho Cucamonga, CA 91730, USA
We aim to respond to all inquiries within 24 hours during business days. Please include your order number for faster assistance.