{"product_id":"samsung-30q-2s-18650-battery-pack-7-4v-3000mah-balanced-bms","title":"Samsung 30Q 2S 18650 Battery Pack 7.4V 3000mAh with Balanced BMS – 4A Pre-wired with XH2.54 Connector for DIY Electronics \u0026 Devices","description":"\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eSafe 7.4V power with cell balancing, ready for your DIY projects.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eThis \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eSamsung 30Q 2S 18650 Battery Pack\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e features two genuine Samsung INR18650-30Q cells connected in series (2S), delivering a nominal \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e7.4V voltage\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e (8.4V full charge) and a solid \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e3000mAh capacity\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eWhat sets this pack apart is its integrated \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eBalanced Protection Board (BMS)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e. The balancing function ensures both cells remain at the same voltage during charging, maximizing battery life and safety. The board also provides comprehensive protection against overcharge, over-discharge, over-current, and short circuits.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003ePre-wired with a default \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eXH2.54 2-pin connector\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e, it is ready to plug into your custom electronics. \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eImportant:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Due to the protection board, the \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003econtinuous working current is limited to 4A\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e (peak 8A). This pack is designed for low-to-medium current devices requiring 7.4V, such as portable audio gear, DIY electronics, and sensors. It is \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003enot\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e intended for high-drain RC vehicles or power tools.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e2S Series Configuration (7.4V):\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Provides a higher 7.4V nominal voltage (8.4V full charge) for devices requiring more power than a single 3.7V cell.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eBalanced Protection Board (BMS):\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e The built-in balancing circuit keeps the two cells perfectly synchronized, preventing voltage drift and extending the pack's lifespan. Includes full overcharge, over-discharge, and short-circuit protection.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eSafe 4A Continuous Current:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Specifically designed for low-to-medium current devices. (Max continuous 4A, peak startup 8A).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePre-wired \u0026amp; Plug-and-Play:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Comes with a default XH2.54 2-pin connector (red\/black leads, 8-15cm) for easy integration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCompact 2-Cell Layout:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Shrink-wrapped with the side protection board, measuring approx. 66mm (H) x 36.9mm (W) x 18.4mm (D).\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003eParameters\u003c\/span\u003e\u003c\/h3\u003e\n\u003cdiv class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eParameter\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eCell Model\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eSamsung INR18650-30Q (2 cells in series)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eConfiguration\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e2S1P (Series)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eNominal Voltage\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e7.4V (Full charge: 8.4V)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eNominal Capacity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e3000mAh\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eContinuous Working Current\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e≤ 4A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003ePeak Startup Current\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e≤ 8A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eProtection Board\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eYes (Balanced BMS, Overcharge, Over-discharge, Over-current, Short circuit)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eConnector Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eXH2.54 2-Pin (Red + \/ Black -)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eWire Length\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eApprox. 8-15cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eDimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eApprox. 18.4mm (D) x 36.9mm (W) x 66mm (H)*\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eApprox. 100g\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cem\u003e\u003cspan class=\"\"\u003e*Dimensions are approximate and include the protection board and heat shrink wrap. Please allow ±1-2mm tolerance.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003eApplications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eRecommended For:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e7.4V DIY Electronics:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Perfect for audio amplifiers, portable speakers, and custom electronic circuits requiring 7.4V.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePortable Devices:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e High-capacity replacement for mini fans, radios, and devices designed for 2S Li-ion power (with a 4A limit).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCustom Power Banks:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Build a 7.4V safe power bank with built-in protection.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eSensors \u0026amp; IoT Nodes:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Reliable 7.4V power for long-term standalone deployments.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNot Recommended For:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHigh-Drain RC Models or Power Tools (\u0026gt;4A):\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Do not use in RC cars, drones, or power tools that draw more than 4A continuously. The protection board will trip and cut off power.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eDevices Requiring Bare Cells:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e If your device's battery tray expects a standard flat-top cell, this pre-wired pack will not fit.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eSingle-Cell 3.7V Devices:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e Do not use this 7.4V pack in devices designed for 3.7V, as it will damage the device.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003eFAQ\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ1: What does \"2S\" mean and how does it differ from a single cell?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eA: \"2S\" means 2 cells in Series. This doubles the voltage to \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e7.4V\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e (8.4V full charge) while keeping the capacity at \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e3000mAh\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e. It is used for devices that require higher voltage than a standard single 3.7V cell.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ2: What is a \"Balanced BMS\" and why is it important?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eA: A balanced BMS ensures that both cells are charged and discharged evenly. Without balancing, one cell might drift out of sync, reducing the overall lifespan and safety of the battery pack. This BMS automatically manages that balance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ3: What is the maximum discharge current?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eA: Because of the protection board, the \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003econtinuous working current is limited to 4A\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e (with a peak of 8A for short startups). It is not designed for high-drain devices like RC cars or power tools.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ4: Can I use this for my RC car or power tool?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eA: \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eNo.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e RC cars and power tools typically require 15A to 30A+. The 4A limit on this protection board will cause it to shut off immediately under load.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQ5: How do I charge this 7.4V pack?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eA: You must use a dedicated 2S Li-ion charger (8.4V output) or integrate it into a custom charging circuit. Do not use a single-cell 4.2V charger.\u003c\/span\u003e\u003c\/p\u003e","brand":"Samsung","offers":[{"title":"Default Title","offer_id":68180255342896,"sku":"P29","price":22.89,"currency_code":"USD","in_stock":true}],"url":"https:\/\/powerpackhub.com\/products\/samsung-30q-2s-18650-battery-pack-7-4v-3000mah-balanced-bms","provider":"My Store","version":"1.0","type":"link"}