{"product_id":"witty-fox-3-7v-400mah-li-ion-battery","title":"Witty Fox 3.7V 400mAh Li-Ion Battery","description":"\u003cmeta name=\"description\" content=\"Buy Witty Fox 37V 400mAh LiIon Battery online in India at best price from The Tech Depot, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eWitty Fox 3.7V 400mAh Li-Ion Battery\u003c\/h1\u003e\n\u003cp\u003eA compact, rechargeable 3.7V 400mAh lithium-ion battery by Witty Fox - ideal for powering small electronics projects, IoT devices, wearables, and portable gadgets. Lightweight design with reliable discharge performance and built-in protection circuitry for safe operation. Available at The Tech Depot, Bengaluru with fast shipping and full technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eWitty Fox\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Chemistry\u003c\/td\u003e\n\u003ctd\u003eLithium-Ion (Li-Ion)\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\u003e400mAh\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 (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Circuit\u003c\/td\u003e\n\u003ctd\u003eBuilt-in (overcharge, over-discharge, short circuit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003eJST PH 2.0mm 2-pin (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRechargeable\u003c\/td\u003e\n\u003ctd\u003eYes - 500+ charge\/discharge cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox. 8-10 grams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eCompact pouch\/prismatic cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal Witty Fox - 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 3.7V Output:\u003c\/strong\u003e Stable nominal voltage suitable for microcontrollers, sensors, and low-power electronics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e400mAh Capacity:\u003c\/strong\u003e Provides adequate runtime for small IoT nodes, GPS trackers, wearables, and handheld devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in Protection Circuit Module (PCM):\u003c\/strong\u003e Safeguards against overcharging, deep discharge, and short circuits - extending battery lifespan and ensuring safe operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight \u0026amp; Compact:\u003c\/strong\u003e Weighing under 10 grams, it fits easily into space-constrained enclosures and portable builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRechargeable - 500+ Cycles:\u003c\/strong\u003e Charge via standard TP4056 or similar Li-Ion charging modules for hundreds of reliable cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJST 2-Pin Connector:\u003c\/strong\u003e Plug-and-play compatibility with many development boards, charging modules, and custom PCBs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWitty Fox Quality:\u003c\/strong\u003e Trusted Indian brand known for reliable, hobbyist-friendly battery solutions with consistent capacity ratings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Witty Fox 3.7V 400mAh Battery?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e100% authentic Witty Fox product sourced from authorized channels - genuine rated capacity\u003c\/li\u003e\n\u003cli\u003eIdeal balance of size, weight, and capacity for compact portable projects\u003c\/li\u003e\n\u003cli\u003eIntegrated safety protection eliminates the need for external protection circuits\u003c\/li\u003e\n\u003cli\u003eCompatible with widely available TP4056 charging boards for easy recharging\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 the battery into your project\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIoT Sensor Nodes:\u003c\/strong\u003e Power ESP8266\/ESP32-based wireless sensor nodes for temperature, humidity, or air quality monitoring with deep-sleep optimization for extended battery life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGPS Tracker:\u003c\/strong\u003e Build a compact, battery-powered GPS tracking device for pets, bicycles, or personal belongings using a NEO-6M GPS module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWearable Electronics:\u003c\/strong\u003e Create LED wristbands, smart badges, or health-monitoring wearables that need a small, lightweight power source.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable Bluetooth Speaker:\u003c\/strong\u003e Power a miniature Bluetooth audio module for a custom pocket-sized speaker build.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArduino\/Microcontroller Projects:\u003c\/strong\u003e Use as a portable power supply for Arduino Nano, ATtiny, or STM32-based handheld instruments and data loggers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRC Micro Drones \u0026amp; Robots:\u003c\/strong\u003e Lightweight enough for small robotic platforms, micro quadcopters, or line-following robots.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmergency LED Lamp:\u003c\/strong\u003e Combine with a TP4056 charger and white LEDs for a simple rechargeable emergency light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLearning \u0026amp; Education:\u003c\/strong\u003e Perfect for students exploring battery management, power electronics, and embedded systems in lab or classroom settings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRecommended Companion Components\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTP4056 Li-Ion Charging Module:\u003c\/strong\u003e Micro-USB or USB-C based charger board with built-in protection - the standard way to recharge this battery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.3V\/5V Boost Converter:\u003c\/strong\u003e Step-up module to convert 3.7V to 5V for powering Arduino, sensors, or USB devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSPDT Slide Switch:\u003c\/strong\u003e Simple on\/off switch to control power delivery from the battery to your circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJST PH 2.0mm Connectors:\u003c\/strong\u003e Spare connectors and pigtails\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 Witty Fox 3.7V 400mAh Li-Ion Battery Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eWitty Fox 3.7V 400mAh Li-Ion Battery\u003c\/strong\u003e online at \u003ca href=\"https:\/\/thetechdepot.in\"\u003eThe Tech Depot\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\u003eWitty Fox 3.7V 400mAh 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\u003eWitty Fox 3.7V 400mAh Li-Ion Battery\u003c\/strong\u003e at the best price in India? The Tech Depot 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":"The Tech Depot","offers":[{"title":"Default Title","offer_id":48746536272129,"sku":"TTD-17417","price":209.88,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/1577\/3185\/files\/71defd5985bff20801a402a8789929e7.png?v=1778107053","url":"https:\/\/techdepot.in\/products\/witty-fox-3-7v-400mah-li-ion-battery","provider":"Tech Depot India","version":"1.0","type":"link"}