Samsung 30Q 18650 3000mAh 15A Battery

product description Samsung 30Q 18650 3000mAh / 15A Balanced high-drain 3.0Ah 18650 lithium-ion cell designed for applications that need a practical mix of runtime, current capability, compact size, and pack-building flexibility. This Shopify-ready page summarizes the live product listing and Samsung SDI specification into a technical, chart-heavy layout for customers comparing voltage behavior, rate capability, cycle life, thermal limits, and fitment. 3000mAh Class Capacity 15A Continuous Discharge 4A Rated Charge 3.6V Nominal Voltage 18650 Form Factor Unprotected Flat Top 3000mAh class capacity 2950mAh minimum capacity 15AMax Continuous Discharge 4ARated Charge Current ≤26mΩInitial AC Impedance 18.4 × 65.0mmMax Cell Envelope Samsung 30Q 18650 3000mAh 15A Battery The Samsung INR18650-30Q sits in the balanced high-drain category. It offers more capacity than many ultra-power-focused 18650 cells while still providing a 15A continuous discharge rating. That makes it useful for flashlights, custom packs, moderate power tools, robotics, portable equipment, and other designs that require stable 18650 performance without moving to a lower-capacity cell. In practical design terms, the 30Q is best viewed as a capacity-forward high-drain cell: strong 3.0Ah-class runtime with enough current support for medium-to-high drain devices. For engineering calculations, use 2950mAh minimum capacity, 2900mAh rated 10A discharge capacity, and 15A maximum continuous discharge at 25°C. Design note: the simplified charts below are presentation-oriented engineering visuals built from the published specification and test conditions. They are meant for product-page comparison and pack-planning guidance, not as a substitute for full validation testing in the final application. Brand / Model Samsung SDI INR18650-30Q Cell Type 18650 cylindrical lithium-ion rechargeable cell Nominal / Advertised Capacity 3000mAh class Minimum Capacity 2950mAh at 0.2C discharge to 2.5V Rated Discharge Capacity ≥2900mAh at 10A discharge to 2.5V after rated charge Nominal Voltage 3.6V Charge Cut-Off Voltage 4.20V ±0.05V Discharge Cut-Off Voltage 2.50V Standard Charge Method 1.50A CC-CV to 4.2V, terminate at 150mA Rated Charge Method 4A CC-CV to 4.2V, terminate at 100mA Charging Time Approx. 180 minutes standard charge; approx. 70 minutes rated charge at 25°C Max Continuous Discharge 15A at 25°C 60% at 250 cycle criterion Initial Impedance ≤26mΩ AC impedance at 1kHz after standard charge Dimensions 18.4mm max diameter × 65.0mm max height, with tube Weight 48.0g max Charge Temperature 0°C to 50°C Recommended recharge release <45°C Discharge Temperature -20°C to 75°C Recommended re-discharge release <60°C Storage Temperature 1.5 years: -30°C to 25°C; 3 months: -30°C to 45°C; 1 month: -30°C to 60°C, at ex-factory SOC Shipment Voltage 3.620V to 3.690V Protection No — unprotected bare cell Electrical operating envelope at a glance. These quick-reference visuals summarize how the cell behaves in relation to current, voltage window, capacity-to-energy translation, and C-rate interpretation. 1. Current Capability Stack A simple comparison of key current reference points for charging, rated discharge testing, and continuous discharge. 15A 10A 4A 1.5A Max continuous discharge Rated discharge test Rated charge Standard charge Current (A) 2. Voltage Operating Window Recommended pack logic should keep the cell within this basic CC-CV charge and discharge range. 2.5V 4.2V Usable operating band Discharge cut-off Charge cut-off Nominal cell voltage: 3.6V 3. Capacity and Energy Translation Capacity is stated in amp-hours, while energy depends on nominal voltage. Capacity 3.0Ah Voltage 3.6V Nominal Energy ≈ 10.8Wh × = 4. C-Rate Conversion For a 3000mAh-class cell, C-rate helps convert current into a normalized loading level. 1C ≈3.0A based on 3000mAh class capacity 1.5A ≈0.5C standard charge method 4A ≈1.33C rated charge method 10A ≈3.33C rated discharge capacity test 15A ≈5C maximum continuous discharge rating 20A ≈6.67C rate-capability characterization point, not the continuous design rating Discharge-rate capability is strong for a 3000mAh-class 18650. Samsung’s rate-capability table compares 0.6A, 5A, 10A, 15A, and 20A discharge currents after rated charge. The 10A test is the index point, with the table showing 97% at 15A and 95% at 20A. This makes the 30Q a useful mid-to-high-drain cell, but the correct continuous product rating remains 15A. The simplified discharge graph below is intentionally presentation-friendly: it visualizes voltage versus capacity under 5A, 10A, 15A, and 20A loading so shoppers can understand the trade-off between current, voltage sag, and delivered capacity. Relative rate capability summary 0.6A 100% relative capacity 5A 97% relative capacity 10A 100% relative capacity, 10A index point 15A 97% relative capacity 20A 95% relative capacity, characterization only Interpretation The 30Q retains strong capacity under load, but 15A is the correct continuous rating for product copy and pack calculations. 5. Simplified Discharge-Curve Graph Voltage vs. capacity illustration under 5A, 10A, 15A, and 20A discharge. Simplified for product-page visualization. 4.2V 3.9V 3.6V 3.3V 3.0V 2.7V 2.5V 0 700 1400 2100 2800 mAh Capacity delivered Cell voltage 5A moderate 10A index 15A CDR 20A data point 6. Estimated IR Voltage Drop Using the specification limit of ≤26mΩ AC impedance as a fast order-of-magnitude planning reference. V_drop ≈ I × R At 15A and 26mΩ: 0.39V estimated internal drop At 10A and 26mΩ: 0.26V estimated internal drop Pack busbars, welds, holders, and BMS also add resistance Actual sag changes with temperature, SOC, age, and duty cycle Thermal conditions affect charge acceptance, discharge performance, and cycle life. The specification includes charge and discharge temperature ranges, recovery storage conditions, rate capability, and cycle-life criteria. These are useful for pack designers, flashlight builders, and custom system integrators. 7. Charge Profile Reference Standard charge: 1.5A CC/CV to 4.2V, terminate at 150mA. Rated charge: 4A CC/CV to 4.2V, terminate at 100mA. CC stage CV hold @ 4.2V Current tapers to 150mA / 100mA Voltage / current Charge time progression Start Constant current Constant voltage 8. Thermal Operating Envelope Published operating ranges with recommended thermal release thresholds. Charge: 0°C to 50°C Discharge: -20°C to 75°C <45°C recommended recharge release <60°C recommended re-discharge release System thermal management should be based on measured cell-surface temperatures. 9. Rate Capability Index Relative discharge capacity at 25°C; the 10A result is the 100% index point. 0.6A 5A 10A 15A 20A 100% 97% 100% 97% 95% 100% 90% 80% 70% Relative capacity Discharge current 10. Cycle-Life Visualization Published cycle criterion: ≥1800mAh after 250 cycles with standard charge and maximum continuous discharge. 60% capacity line ≥1800mAh after 250 cycles 0 100 200 250 300 100% 80% 70% 60% Cycle count Relative capacity Storage-performance note: the data sheet lists recovery of at least 90% after storage for 1 month at 60°C from the standard charged state, based on the 10A discharge capacity reference. 18650 dimensional envelope for holders, sleds, weld fixtures, and pack CAD. Mechanical fit is especially important in dense assemblies. The manufacturer dimension is specified with tube, so the diagram below should be treated as a maximum envelope reference for compatibility planning. 11. Cell Dimension Diagram Mechanical envelope based on the published specification dimensions. 65.0mm max 18.4mm max Cylindrical cell with tube / wrap included in stated envelope Always confirm real fit in holders, chargers, and welded pack fixtures. 12. Pack Scaling Formulas Quick math for designers building series/parallel battery packs. Pack Voltage ≈ Series Count × 3.6V Pack Capacity ≈ Parallel Count × 3.0Ah Pack Energy ≈ S × P × 10.8Wh Pack Current Capability ≈ Parallel Count × 15A 13. Example Parallel Scaling Approximate scaling, assuming balanced cells and proper thermal/electrical design. 1P 3.0Ah, 10.8Wh, 15A 2P 6.0Ah, 21.6Wh, 30A 3P 9.0Ah, 32.4Wh, 45A 4P 12.0Ah, 43.2Wh, 60A 5P 15.0Ah, 54.0Wh, 75A 14. Common Series Voltage Examples Nominal voltage examples only. Full-charge and cut-off pack voltages scale separately. 1S 3.6V nominal / 4.2V full / 2.5V cut-off 3S 10.8V nominal / 12.6V full / 7.5V cut-off 4S 14.4V nominal / 16.8V full / 10.0V cut-off 5S 18.0V nominal / 21.0V full / 12.5V cut-off 10S 36.0V nominal / 42.0V full / 25.0V cut-off 13S 46.8V nominal / 54.6V full / 32.5V cut-off Use the Samsung 30Q inside a controlled electrical and thermal system. This is an unprotected industrial lithium-ion cell. Safe implementation requires a charger/BMS strategy that respects the basic voltage and temperature boundaries, along with pack-level overcurrent and short-circuit protection. 15. Suggested Control Threshold Map System-level control guidance derived from the published operating range. Charge upper limit 4.20V ±0.05V per cell Discharge floor 2.50V per cell Charge temperature gate Allow 0°C to 50°C, with <45°C preferred restart threshold Discharge temperature gate Allow -20°C to 75°C, with <60°C preferred restart threshold Continuous current Do not exceed 15A per cell continuous unless the pack is separately validated and derated by design Pack design Use voltage monitoring, over-temperature, over-voltage, over-current, and short-circuit protection 16. Risk-Control Checklist Recommended pack-building and use practices. Use only in devices or packs designed for lithium-ion 18650 cylindrical cells. Do not charge above 4.20V or discharge below 2.50V per cell. Use a charger/BMS that monitors voltage, current, and temperature. Do not charge below 0°C or above the specified charge temperature limit. Never carry loose cells with conductive objects such as keys or coins. Spot weld for pack assembly; do not solder directly to the cell body. Inspect wraps and insulator rings before use; rewrap damaged cells immediately. Best suited for balanced runtime and moderate-to-high current systems. High-Output Flashlights Good fit for lights designed for unprotected flat-top 18650 cells. Useful where 3000mAh class runtime and 15A output are both valued. Custom Battery Packs Strong candidate for balanced 18650 packs with moderate-to-high current demand. Requires proper cell matching, weld quality, BMS, insulation, and thermal validation. Robotics / RC Appropriate for compact electric systems where stable current and runtime matter. Use enough parallel cells to keep per-cell current below the design target. Portable Tools Useful in moderate-duty cordless tools and portable equipment packs. For high-torque peak loads, derate and validate under real thermal conditions. E-Bike / Mobility Modules Can be used in DIY packs when parallel count, BMS, and heat management are properly engineered. Not a substitute for complete pack-level safety certification. Portable Electronics Works well where a common 18650 format, 3.0Ah capacity, and 15A headroom are useful. Use protected device architecture and proper charge/discharge control. 17. Selection Bias: Runtime vs. Current Quick visual positioning of the 30Q within a common battery-selection framework. More runtime per cell → More power / current → Samsung 30Q Balanced runtime and current Higher-capacity energy cells sit further right Higher-power cells sit further up 18. Application Suitability Matrix Simple product-page fit guidance. Flashlights Strong fit Custom packs Strong fit Portable electronics Strong fit Power tools Moderate-duty fit Extreme high-current devices Consider higher-drain cells Safety, Handling & Compatibility Notice This product is an unprotected lithium-ion cell. It should only be used by customers who understand cell-level lithium-ion safety and who are using the battery in compatible hardware, managed packs, or professionally designed assemblies. Improper use can lead to overheating, venting, fire, or explosion. Charge only with lithium-ion chargers or managed battery systems designed for the correct chemistry and cell count. Never short circuit, crush, puncture, incinerate, or expose the cell to water. Do not use cells with damaged wraps, dented cans, or missing top insulator rings. Do not mix with cells of different age, capacity, brand, chemistry, or state of charge in the same pack. For assembly, use spot welding rather than direct soldering to reduce heat damage risk. Store and transport in non-conductive cases; never carry loose cells in pockets or bags. Keep away from children and from applications for which the product is not specified. Not for e-cigarette, vape, or similar use. This page is formatted as a technical, chart-oriented Shopify description and is intended to improve customer understanding. Final device compatibility and safety remain the responsibility of the integrator or end user. Common technical questions about the Samsung 30Q. What is the capacity of the Samsung 30Q? The Samsung SDI specification lists a 2950mAh minimum discharge capacity, while the product is commonly sold as a 3000mAh-class 18650 cell. What is the discharge rating? The maximum continuous discharge rating is 15A at 25°C. The 20A value in the rate-capability table is a characterization data point, not the continuous product rating. Is this a protected battery? No. This is an unprotected flat-top 18650 cell and should only be used in equipment or packs with appropriate electrical and thermal protectio