{"product_id":"3-7v-1800mah-18650-battery","title":"3.7V 1800mAh 18650 Battery","description":"\u003cmeta name=\"description\" content=\"Buy 37V 1800mAh 18650 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```html\n\u003ch1\u003e3.7V 1800mAh 18650 Battery\u003c\/h1\u003e\n\u003cp\u003eHigh-capacity rechargeable 18650 lithium-ion battery delivering reliable 3.7V power with 1800mAh capacity. The industry-standard 18650 form factor makes this cell ideal for portable electronics, battery packs, flashlights, DIY power banks, and countless maker projects. Available from The Engineer Store, Bengaluru with fast shipping and full warranty support.\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\u003e1800mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge Voltage\u003c\/td\u003e\n\u003ctd\u003e4.2V (max)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge Cut-off Voltage\u003c\/td\u003e\n\u003ctd\u003e2.75V\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\u003e300-500 charge\/discharge cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e~45g (approx.)\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\u003eBuilt-in Protection\u003c\/td\u003e\n\u003ctd\u003eOvercharge, over-discharge, and short-circuit protection (PCB protected)\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\u003eReliable 1800mAh Capacity:\u003c\/strong\u003e Provides sustained power for extended run times in portable devices and DIY builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 18650 Form Factor:\u003c\/strong\u003e Universally compatible 18mm x 65mm cylindrical cell fits standard battery holders, sleds, and enclosures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable 3.7V Output:\u003c\/strong\u003e Consistent nominal voltage throughout the discharge curve for predictable circuit performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in Protection Circuit:\u003c\/strong\u003e Integrated PCB safeguards against overcharging, deep discharge, and short circuits for safer operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Cycle Life:\u003c\/strong\u003e Rated for 300-500 full charge\/discharge cycles, delivering long-term value and dependable rechargeability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Temperature Range:\u003c\/strong\u003e Operates reliably from -20 degreesC to 60 degreesC, suitable for indoor and outdoor applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight \u0026amp; Compact:\u003c\/strong\u003e Weighing approximately 45g, ideal for weight-sensitive portable and wearable projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRechargeable \u0026amp; Eco-Friendly:\u003c\/strong\u003e Hundreds of reuse cycles reduce waste compared to disposable batteries.\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, authorized suppliers\u003c\/li\u003e\n\u003cli\u003eGenuine rated capacity - no inflated or misleading mAh claims\u003c\/li\u003e\n\u003cli\u003eProtection circuitry included for safe charging and discharging\u003c\/li\u003e\n\u003cli\u003e1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003eExpert technical support to help you integrate into any project\u003c\/li\u003e\n\u003cli\u003eIdeal for both prototyping and production-level builds\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 multiple 18650 cells with a TP4056 charging module and boost converter to build a custom portable charger for smartphones and tablets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArduino \u0026amp; ESP32 Portable Projects:\u003c\/strong\u003e Power your microcontroller projects on the go - perfect for IoT sensor nodes, weather stations, and GPS trackers that need untethered operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Power LED Flashlight:\u003c\/strong\u003e Drive CREE or COB LEDs for a compact, rechargeable torch with hours of bright illumination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Pack Assembly:\u003c\/strong\u003e Wire cells in series or parallel configurations (with a BMS) to create custom battery packs for robotics, e-bikes, drones, or UPS backup systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar Energy Storage:\u003c\/strong\u003e Pair with a solar panel and charge controller to store harvested energy for off-grid lighting, sensor networks, or emergency power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLearning \u0026amp; Education:\u003c\/strong\u003e Excellent for students studying battery chemistry, voltage regulation, power management ICs, and electrical engineering fundamentals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRC Vehicles \u0026amp; Drones:\u003c\/strong\u003e Lightweight and energy-dense power source for remote-controlled cars, boats, and small quadcopters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Accessories\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTP4056 Li-Ion Charger Module:\u003c\/strong\u003e Safe, dedicated single-cell charging with micro-USB input and charge status LEDs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e18650 Battery Holder:\u003c\/strong\u003e Spring-loaded plastic holders available in 1-slot, 2-slot, and 4-slot configurations for easy integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBMS (Battery Management System):\u003c\/strong\u003e Essential for multi-cell series\/parallel packs - balances cells and provides protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNickel Strips:\u003c\/strong\u003e For spot-welding cells into permanent battery packs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMT3608 Boost Converter:\u003c\/strong\u003e Step up the 3.7V output to 5V, 9V, or 12V\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 1800mAh 18650 Battery Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003e3.7V 1800mAh 18650 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 1800mAh 18650 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 1800mAh 18650 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":43773720035491,"sku":"TES-EV102444","price":91.16,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/63.png?v=1701074091","url":"https:\/\/www.theengineerstore.in\/zh-hans\/products\/3-7v-1800mah-18650-battery","provider":"The Engineer Store","version":"1.0","type":"link"}