{"product_id":"mcp73871-solar-lithium-battery-charging-module-with-power-path-management-5v-dc","title":"MCP73871 Solar Lithium Battery Charging Module with Power Path Management (5V DC)","description":"\u003cp data-path-to-node=\"5\"\u003eWhen building solar-powered projects or devices that need to run continuously while plugged in, standard chargers like the TP4056 fall short because they cannot properly separate the battery from the load. The \u003cb data-path-to-node=\"5\" data-index-in-node=\"210\"\u003eMCP73871 Solar Lithium Battery Charging Module\u003c\/b\u003e solves this with advanced \u003cb data-path-to-node=\"5\" data-index-in-node=\"283\"\u003ePower Path Management\u003c\/b\u003e (Load Sharing). This intelligent IC prioritizes powering your circuit first, using whatever current is left over to charge the battery. When the sun goes down or the DC power is unplugged, it seamlessly and instantly switches your circuit over to battery power without causing microcontrollers to reset.\u003c\/p\u003e\n\u003cp data-path-to-node=\"6\"\u003eDesigned specifically to handle the fluctuating power output of 5V-6V solar panels, this module prevents the charger from \"collapsing\" the solar panel's voltage when clouds roll in. It provides an all-in-one hub for your power needs, typically featuring inputs for both a DC barrel jack and a standard USB connection, alongside standard JST terminals for plugging in your LiPo battery and your project load.\u003c\/p\u003e\n\u003cp data-path-to-node=\"7\"\u003e\u003cb data-path-to-node=\"7\" data-index-in-node=\"0\"\u003eKey Features \u0026amp; Functional Advantages:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"8\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,0,0\"\u003e\u003cb data-path-to-node=\"8,0,0\" data-index-in-node=\"0\"\u003eSmart Power Path Management:\u003c\/b\u003e Simultaneously powers your device and charges the battery. If the load requires more current than the solar panel can provide, it automatically supplements the power with the battery.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,1,0\"\u003e\u003cb data-path-to-node=\"8,1,0\" data-index-in-node=\"0\"\u003eSeamless Power Switching:\u003c\/b\u003e Acts as a true Uninterruptible Power Supply (UPS) for 3.3V\/5V microcontrollers, ensuring continuous operation when transitioning between solar\/wall power and battery power.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,2,0\"\u003e\u003cb data-path-to-node=\"8,2,0\" data-index-in-node=\"0\"\u003eOptimized for Solar Panels:\u003c\/b\u003e Specially designed to work with 5V to 6V solar panels. It handles voltage drops and current fluctuations gracefully, maximizing the efficiency of your solar harvesting.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,3,0\"\u003e\u003cb data-path-to-node=\"8,3,0\" data-index-in-node=\"0\"\u003eStatus Indicator LEDs:\u003c\/b\u003e Features built-in LEDs (typically Power Good, Charging, and Done) so you can instantly verify the charging status and solar input viability at a glance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,4,0\"\u003e\u003cb data-path-to-node=\"8,4,0\" data-index-in-node=\"0\"\u003eSafe CC\/CV Charging:\u003c\/b\u003e Employs a rigorous Constant-Current\/Constant-Voltage charging algorithm to safely top off 3.7V\/4.2V lithium cells without risking dangerous over-voltage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"9\"\u003e\u003cb data-path-to-node=\"9\" data-index-in-node=\"0\"\u003ePerfect For:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"10\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,0,0\"\u003e\u003cb data-path-to-node=\"10,0,0\" data-index-in-node=\"0\"\u003eRemote IoT Telemetry Nodes:\u003c\/b\u003e The absolute best choice for powering outdoor ESP32 or STM32 environmental sensors and telemetry equipment that rely on a small solar panel to stay alive indefinitely.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,1,0\"\u003e\u003cb data-path-to-node=\"10,1,0\" data-index-in-node=\"0\"\u003eSolar Weather Stations:\u003c\/b\u003e Ensures your environmental data loggers capture uninterrupted 24\/7 data, efficiently harvesting energy during the day to run through the night.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,2,0\"\u003e\u003cb data-path-to-node=\"10,2,0\" data-index-in-node=\"0\"\u003eDIY Uninterruptible Power Supplies (UPS):\u003c\/b\u003e Ideal for keeping Raspberry Pi Zeros, routers, or security cameras online during momentary grid power outages.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,3,0\"\u003e\u003cb data-path-to-node=\"10,3,0\" data-index-in-node=\"0\"\u003eSustainable Wearables:\u003c\/b\u003e A great power hub for charging electronic backpacks or smart outdoor gear equipped with flexible solar cells.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"11\"\u003e\u003cb data-path-to-node=\"11\" data-index-in-node=\"0\"\u003eTechnical Specifications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"12\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,0,0\"\u003e\u003cb data-path-to-node=\"12,0,0\" data-index-in-node=\"0\"\u003eCharge Controller IC:\u003c\/b\u003e Microchip MCP73871\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,1,0\"\u003e\u003cb data-path-to-node=\"12,1,0\" data-index-in-node=\"0\"\u003eInput Voltage:\u003c\/b\u003e 5.0V to 6.0V DC (Do not exceed 6.0V, or the IC will be destroyed)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,2,0\"\u003e\u003cb data-path-to-node=\"12,2,0\" data-index-in-node=\"0\"\u003eSupported Battery Chemistry:\u003c\/b\u003e 1-Cell (1S) 3.7V Lithium Polymer (LiPo) or Lithium-Ion (18650)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,3,0\"\u003e\u003cb data-path-to-node=\"12,3,0\" data-index-in-node=\"0\"\u003eCharge Cut-off Voltage:\u003c\/b\u003e 4.2V (± 1%)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,4,0\"\u003e\u003cb data-path-to-node=\"12,4,0\" data-index-in-node=\"0\"\u003eMax Charge Current:\u003c\/b\u003e Typically configured to 500mA (Can be adjusted up to 1A via resistor changes)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,5,0\"\u003e\u003cb data-path-to-node=\"12,5,0\" data-index-in-node=\"0\"\u003eMax Load Current:\u003c\/b\u003e 1.8A (When powered from a strong DC source)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,6,0\"\u003e\u003cb data-path-to-node=\"12,6,0\" data-index-in-node=\"0\"\u003eTypical Interfaces:\u003c\/b\u003e DC Barrel Jack (5.5x2.1mm), Mini\/Micro\/Type-C USB, and JST-PH 2.0mm ports for Battery and Load.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,7,0\"\u003e\u003cb data-path-to-node=\"12,7,0\" data-index-in-node=\"0\"\u003eDimensions:\u003c\/b\u003e Approximately 41 mm x 33 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"K-TECHNICS","offers":[{"title":"Default Title","offer_id":42857604382791,"sku":null,"price":700.0,"currency_code":"KES","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/7637\/2039\/files\/usb-solar-dc-charger-pmdway-1_1800x1800_6ca618c3-f6bf-494f-bf25-168b529888e8.webp?v=1780903622","url":"https:\/\/www.ktechnics.com\/products\/mcp73871-solar-lithium-battery-charging-module-with-power-path-management-5v-dc","provider":"K-TECHNICS","version":"1.0","type":"link"}