{"product_id":"18650-lithium-battery-charging-boost-module-3-7v-9v-5v-adjustable","title":"18650 Lithium Battery Charging Boost Module 3.7V to 9V\/5V 2A","description":"\u003ch2\u003e18650 Lithium Battery Charging \u0026amp; Boost Module – 3.7V to 9V\/5V Adjustable\u003c\/h2\u003e\n\n\u003cp\u003eUpgrade your electronics projects with this compact, all-in-one \u003cstrong\u003e18650 Lithium Battery Charging, Boosting \u0026amp; Discharging Integrated Module\u003c\/strong\u003e. Designed for makers, hobbyists, and electronics enthusiasts, this versatile module handles charging, voltage boosting, and discharging in a single board — perfect for multimeter modifications, DIY power banks, and custom battery-powered devices.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated 3-in-1 Design:\u003c\/strong\u003e Combines charging, boost conversion, and discharge protection in one compact module — no need for separate components.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Output:\u003c\/strong\u003e Boosts from a standard 3.7V 18650 lithium cell up to selectable \u003cstrong\u003e5V or 9V\u003c\/strong\u003e output — ideal for USB-powered devices and multimeter modifications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Output:\u003c\/strong\u003e Fine-tune the output voltage to suit your specific project requirements with ease.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax 2A Output Current:\u003c\/strong\u003e Handles up to 2A of output current, making it suitable for a wide range of low-to-medium power electronics.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight:\u003c\/strong\u003e Small form factor fits neatly inside custom enclosures, multimeter cases, or DIY builds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in Protection:\u003c\/strong\u003e Overcharge, over-discharge, and short-circuit protection help keep your battery and circuit safe during operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Ready:\u003c\/strong\u003e Standard connection pads make wiring straightforward — great for both beginners and experienced builders.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e 3.7V (18650 Li-ion cell)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Voltage:\u003c\/strong\u003e 5V \/ 9V (adjustable)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Output Current:\u003c\/strong\u003e 2A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Charging + Boost + Discharging (integrated)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Battery:\u003c\/strong\u003e 18650 Lithium-ion\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat Can You Use It For?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMultimeter modification to add rechargeable lithium battery support\u003c\/li\u003e\n  \u003cli\u003eDIY portable power supplies\u003c\/li\u003e\n  \u003cli\u003eCustom USB charging banks\u003c\/li\u003e\n  \u003cli\u003eRobotics and electronics prototyping\u003c\/li\u003e\n  \u003cli\u003eAny project requiring a regulated 5V or 9V supply from a single 18650 cell\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cp\u003ePair this module with these great DIY and craft supplies from our store:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/ccb-flat-round-spacer-beads-diy-jewelry-making\"\u003e4\/6mm CCB Flat Round Spacer Beads DIY Jewelry Making 100-200pcs\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/round-aluminum-wire-diy-jewelry-making-1mm-3mm\"\u003eRound Aluminum Wire 1mm–3mm | DIY Jewelry Making Wire\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.epa.gov\/recycle\/used-lithium-ion-batteries\" target=\"_blank\" rel=\"noopener\"\u003eEPA guidance on lithium-ion battery handling\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eQ: What does this 18650 lithium battery module do?\u003c\/h4\u003e\n\u003cp\u003eA: This integrated module performs three functions in one board: it charges an 18650 lithium-ion battery, boosts the output voltage from 3.7V up to 5V or 9V, and manages the discharge cycle — all with built-in protection circuitry. It is ideal for powering small electronics and modifying devices like multimeters to run on rechargeable lithium cells.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this module compatible with standard 18650 batteries?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. This module is specifically designed to work with standard 3.7V 18650 lithium-ion rechargeable cells. Simply connect your 18650 battery to the input pads, and the module handles the rest — charging, boosting, and regulated output.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I adjust the output voltage between 5V and 9V?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The module features an adjustable output so you can select or fine-tune between 5V and 9V depending on your project's needs. This makes it highly versatile for a wide range of DIY electronics applications.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the maximum current this module can supply?\u003c\/h4\u003e\n\u003cp\u003eA: The module supports a maximum output current of 2A, which is sufficient for powering small microcontrollers, sensors, multimeters, and other low-to-medium power electronic devices.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does this 18650 lithium battery module do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This integrated module performs three functions in one board: it charges an 18650 lithium-ion battery, boosts the output voltage from 3.7V up to 5V or 9V, and manages the discharge cycle — all with built-in protection circuitry. 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