{"product_id":"max745-1-4-pack-lithium-battery-charging-board","title":"MAX745 1-4 Pack Lithium Battery Charging Board","description":"\u003cmeta name=\"description\" content=\"Buy MAX745 1-4 Pack Lithium Battery Charging Board 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\n\u003ch1\u003eMAX745 1-4 Pack Lithium Battery Charging Board\u003c\/h1\u003e\n\n\u003cp\u003eThe MAX745 is a highly integrated lithium-ion and lithium-polymer battery charger IC that supports charging 1 to 4 series cells with precision current and voltage regulation. Electronics engineers, roboticists, and IoT developers rely on this board for reliable power management in portable devices, drones, and wearable applications. This charging solution eliminates the complexity of designing discrete charging circuits by providing built-in protection against overcharge, overdischarge, and thermal runaway conditions.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe MAX745 charging board operates on the principle of constant-current constant-voltage (CC-CV) charging topology, which optimizes battery lifespan and charging speed simultaneously. The IC monitors cell voltage in real-time and transitions from constant current mode to constant voltage mode when the battery reaches approximately 4.2V per cell, ensuring safe and efficient charging. The board features integrated MOSFET switches for charge path control and thermistor input for temperature-compensated charging, preventing damage to lithium cells during extreme temperature conditions.\u003c\/p\u003e\n\n\u003cp\u003eThis 1-4 pack configuration allows flexible cell count selection through simple pin configuration or jumper settings, making it ideal for both single-cell applications like smartwatches and four-cell battery packs for power tools or RC vehicles. The MAX745 delivers up to 1A charging current with minimal external component requirements, reducing PCB footprint and design complexity. Built-in safety features include charge termination when current drops below threshold, automatic recharge capability, and fault detection for shorted or missing batteries.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eLithium Battery Charging Board with MAX745 IC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMaxim Integrated\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 days on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping\u003c\/td\u003e\n\u003ctd\u003e1-5 days from Bengaluru\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003e7-8 days across India\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003e24\/7 via Email and WhatsApp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e4.5V to 16V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging Current\u003c\/td\u003e\n\u003ctd\u003eUp to 1000mA adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell Configuration\u003c\/td\u003e\n\u003ctd\u003e1 to 4 Series Lithium Cells\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTermination Voltage\u003c\/td\u003e\n\u003ctd\u003e4.2V per cell (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e0°C to 45°C operating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCB Dimensions\u003c\/td\u003e\n\u003ctd\u003eCompact form factor with standard connectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eProgrammable 1-4 cell configuration allowing single board deployment across multiple battery pack designs without redesign\u003c\/li\u003e\n\u003cli\u003eIntegrated current limiting and thermal shutdown protecting against overcurrent damage and thermal runaway scenarios\u003c\/li\u003e\n\u003cli\u003eAutomatic recharge function that monitors battery voltage and resumes charging if voltage drops below threshold during storage\u003c\/li\u003e\n\u003cli\u003eLow external component count with integrated power MOSFET reducing design complexity and improving reliability\u003c\/li\u003e\n\u003cli\u003eThermistor input for temperature-compensated charging extending lithium cell lifespan in variable climate conditions\u003c\/li\u003e\n\u003cli\u003eStatus output pins indicating charging state, allowing microcontroller integration for smart charging applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePortable consumer electronics including smartphones, tablets, and power banks requiring single-cell fast charging with thermal management\u003c\/li\u003e\n\u003cli\u003eDrone and RC vehicle battery management systems where multi-cell packs demand synchronized charging with cell balancing capabilities\u003c\/li\u003e\n\u003cli\u003eWearable devices and IoT sensors utilizing single-cell lithium batteries with extended runtime and minimal charging infrastructure\u003c\/li\u003e\n\u003cli\u003eIndustrial handheld tools and emergency backup power systems requiring robust 3-4 cell pack charging with fault detection\u003c\/li\u003e\n\u003cli\u003eSolar-powered systems and renewable energy storage applications where the charger interfaces with variable input voltage sources\u003c\/li\u003e\n\u003cli\u003eMedical devices and portable diagnostic equipment demanding certified safety-compliant charging with automatic shutdown features\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003cp\u003eBegin by configuring the MAX745 board for your target cell count using the onboard jumpers or solder bridges typically labeled for 1S, 2S, 3S, or 4S configurations. Connect your lithium battery pack to the designated battery connector ensuring correct polarity, and attach your DC power supply to the input terminals. The board will automatically detect battery presence and initiate charging in constant-current mode, with the status LED indicating active charging state.\u003c\/p\u003e\n\n\u003cp\u003eFor optimal performance, connect a thermistor to the thermistor input if operating in variable temperature environments above 35°C or below 5°C. Adjust the charging current using the onboard potentiometer or resistor divider network to match your battery capacity and desired charge time. Monitor the charge complete indicator pin which transitions low when charging terminates at 4.2V per cell, signaling that the battery is fully charged and safe for device operation. Allow proper ventilation around the board during charging to ensure thermal dissipation, and avoid exposing the board to moisture or conductive debris.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan the MAX745 board charge different cell count batteries without modification?\u003c\/summary\u003e\n\u003cp\u003eYes, the 1-4 pack configuration includes jumper settings or solder bridges that allow you to select between 1S, 2S, 3S, or 4S charging modes. Simply adjust the configuration jumpers before connecting your battery pack. This eliminates the need for multiple charging boards across different product lines.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat happens if I exceed the maximum 1A charging current rating?\u003c\/summary\u003e\n\u003cp\u003eThe MAX745 includes integrated current limiting that prevents output current from exceeding the programmed threshold, protecting both the IC and your battery. However, sustained operation at maximum current generates heat. For charging currents above 500mA, ensure adequate PCB copper area and heat dissipation to maintain operating temperature below 45°C.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the MAX745 board suitable for fast charging applications?\u003c\/summary\u003e\n\u003cp\u003eThe MAX745 supports up to 1A charging current, which qualifies as fast charging for single-cell batteries up to 2000mAh capacity. For larger capacity packs requiring 2A or higher, consider higher-current variants like MAX1555 or external current amplification circuits. The board is optimized for balanced charging speed and battery longevity rather than extreme fast charging.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I integrate the MAX745 charging board with a microcontroller for smart charging?\u003c\/summary\u003e\n\u003cp\u003eThe MAX745 board provides status output pins that indicate charging state, charge complete, and fault conditions. Connect these pins to your microcontroller GPIO inputs to monitor charging progress. You can also control charging enable via the CHG pin, allowing your firmware to implement advanced power management strategies like charging schedule optimization or thermal throttling.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the typical charging time for a 2000mAh single-cell battery?\u003c\/summary\u003e\n\u003cp\u003eAt maximum 1A charging current, a 2000mAh cell typically charges in approximately 2-2.5 hours accounting for the CC-CV transition. Actual charging time depends on battery internal resistance, temperature, and the programmed charge termination current threshold. Lower charging currents extend charging time but improve battery cycle life and reduce heat generation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eOrders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return and warranty policy?\u003c\/summary\u003e\n\u003cp\u003eWe offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. 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 for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eWhy Buy from The Engineer Store\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Products: Sourced directly from authorized distributors with authentication\u003c\/li\u003e\n\u003cli\u003eExpert Team: Our technical team validates every product before listing\u003c\/li\u003e\n\u003cli\u003eFast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003ePan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata\u003c\/li\u003e\n\u003cli\u003ePayment Options: COD, UPI, credit\/debit cards, net banking, EMI available\u003c\/li\u003e\n\u003cli\u003eTechnical Support: 24\/7 expert guidance via email and WhatsApp\u003c\/li\u003e\n\u003cli\u003eReturns: 7-day return policy on manufacturing defects only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuy MAX745 1-4 Pack Lithium Battery Charging Board Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eMAX745 1-4 Pack Lithium Battery Charging Board\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eMAX745 1-4 Pack Lithium Battery Charging Board\u003c\/strong\u003e with fast shipping and expert support.\u003c\/p\u003e\n\u003cp\u003eOur team in Bengaluru is available 24\/7 to support your journey from product selection to project completion.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43853765378211,"sku":"TES-EV02665","price":1738.4,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/Max745_Charger-228x228.jpg?v=1704191950","url":"https:\/\/www.theengineerstore.in\/zh-hans\/products\/max745-1-4-pack-lithium-battery-charging-board","provider":"The Engineer Store","version":"1.0","type":"link"}