{"product_id":"3-7v-2000mah-18650-li-ion-battery","title":"3.7v 2000mah 18650 Li-Ion Battery","description":"\u003cmeta name=\"description\" content=\"Buy 37v 2000mah 18650 LiIon Battery online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003e3.7V 2000mAh 18650 Li-Ion Rechargeable Battery\u003c\/h1\u003e\n\u003cp\u003eHigh-capacity 18650 lithium-ion rechargeable battery delivering reliable 3.7V power at 2000mAh. Ideal for flashlights, power banks, portable electronics, robotics, and DIY energy storage projects. Available at The Engineer Store, Bengaluru with fast shipping and full warranty.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Type\u003c\/td\u003e\n\u003ctd\u003e18650 Lithium-Ion (Li-Ion) Rechargeable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e3.7V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e2000mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging Voltage\u003c\/td\u003e\n\u003ctd\u003e4.2V (max)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCut-off Voltage\u003c\/td\u003e\n\u003ctd\u003e2.75V (min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e18mm diameter x 65mm length (standard 18650)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLithium-Ion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle Life\u003c\/td\u003e\n\u003ctd\u003e500+ charge\/discharge cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Continuous Discharge\u003c\/td\u003e\n\u003ctd\u003e~1C (2A typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e~45g per cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Resistance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;=80mOhm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 degreesC to +60 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 18650 Form Factor:\u003c\/strong\u003e Universally compatible with 18650 battery holders, chargers, and enclosures used across thousands of devices and projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2000mAh Capacity:\u003c\/strong\u003e Provides substantial energy storage - enough to power an LED flashlight for hours or run a microcontroller-based project for extended periods.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable 3.7V Output:\u003c\/strong\u003e Consistent nominal voltage ideal for directly powering 3.3V circuits (with LDO regulator) or 5V circuits (with boost converter).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e500+ Cycle Lifespan:\u003c\/strong\u003e Retains at least 80% capacity after 500 full charge\/discharge cycles, making it cost-effective for long-term use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Self-Discharge:\u003c\/strong\u003e Retains charge during storage - ready to use even after weeks of sitting idle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight \u0026amp; Compact:\u003c\/strong\u003e At roughly 45 grams, offers one of the best energy-to-weight ratios among rechargeable battery types.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Temperature Range:\u003c\/strong\u003e Operates reliably from -20 degreesC to +60 degreesC, suitable for both indoor electronics and outdoor field applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose This?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic cells sourced from trusted suppliers - no recycled or re-wrapped batteries\u003c\/li\u003e\n\u003cli\u003eTested and verified capacity before dispatch\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery from Bengaluru warehouse across India\u003c\/li\u003e\n\u003cli\u003eExpert technical support for battery integration and charging circuit design\u003c\/li\u003e\n\u003cli\u003eIdeal balance of capacity, discharge rate, and cost for most applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIY Power Bank:\u003c\/strong\u003e Combine 2-4 cells with a TP4056 charging module and 5V boost converter to build a custom portable charger for phones and tablets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar Energy Storage:\u003c\/strong\u003e Pair with a solar panel and charge controller to create a small off-grid energy system for sensors, lights, or IoT devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobotics \u0026amp; RC Projects:\u003c\/strong\u003e Power Arduino, ESP32, or Raspberry Pi-based robots with a compact, rechargeable energy source that's easy to swap.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable LED Flashlight:\u003c\/strong\u003e Build a high-brightness tactical flashlight - the 18650 is the standard cell used in most professional-grade torches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIoT \u0026amp; Remote Sensors:\u003c\/strong\u003e Deploy battery-powered environmental monitoring stations, weather sensors, or GPS trackers in remote locations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Pack Assembly:\u003c\/strong\u003e Connect multiple cells in series or parallel to create custom battery packs (e.g., 7.4V, 11.1V, or higher capacity configurations) for drones, e-bikes, or UPS systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLearning \u0026amp; Education:\u003c\/strong\u003e Understand lithium-ion chemistry, charging profiles, BMS (Battery Management System) design, and energy calculations hands-on.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImportant Usage \u0026amp; Safety Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAlways use a proper Li-Ion charger (TP4056 recommended) - do NOT charge above 4.2V\u003c\/li\u003e\n\u003cli\u003eDo not discharge below 2.75V to prevent permanent cell damage\u003c\/li\u003e\n\u003cli\u003eUse a BMS (Battery Management System) when connecting multiple cells in series or parallel\u003c\/li\u003e\n\u003cli\u003eAvoid short-circuiting terminals - Li-Ion cells can deliver high current and may overheat\u003c\/li\u003e\n\u003cli\u003eDo not puncture, crush, or expose to fire\u003c\/li\u003e\n\u003cli\u003eStore in a cool, dry place at approximately 3.7V-3.8V for long-term storage\u003c\/li\u003e\n\u003cli\u003eUse appropriate 18650 battery holders for secure mechanical and electrical connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy 3.7v 2000mah 18650 Li-Ion Battery Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003e3.7v 2000mah 18650 Li-Ion Battery\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003e3.7v 2000mah 18650 Li-Ion Battery\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003e3.7v 2000mah 18650 Li-Ion Battery\u003c\/strong\u003e at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43773643030691,"sku":"TES-EV102163","price":98.58,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/IMG_20220305_131010073-removebg-preview.png?v=1701073513","url":"https:\/\/www.theengineerstore.in\/kn\/products\/3-7v-2000mah-18650-li-ion-battery","provider":"The Engineer Store","version":"1.0","type":"link"}