{"product_id":"lithium-li-ion-18650-step-up-boost-module","title":"3.7V Lithium Battery Charger Board | DC-DC Step-Up Boost Module","description":"\u003cp\u003e\u003cb\u003e3.7V Lithium Battery Charger \u0026amp; Boost Module with Type-C USB\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003ePower up your projects with our ultra-compact and high-performance 3.7V Lithium Battery Charger Board! This versatile DC-DC Step-Up Boost Module is perfect for DIY enthusiasts and electronics projects, offering both reliable charging and adjustable voltage output.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWhy You Need This Module:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCompact \u0026amp; Efficient Design:\u003c\/b\u003e Featuring an ultra-thin, mini design with half-hole screw holes and selected premium materials for durability and performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVersatile Charging:\u003c\/b\u003e Supports single 3.7V Li-ion batteries (like 18650, polymer), fully charging them to 4.2V.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAdjustable Output Voltage:\u003c\/b\u003e Boosts voltage from 4.2V up to 28V, allowing you to power a wide range of devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSmart Charging Protection:\u003c\/b\u003e Equipped with constant current\/constant voltage (CC\/CV) charging, over-temperature protection, soft start to limit inrush current, and reverse battery protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDual Status Indicators:\u003c\/b\u003e Clear LED indicators (Red CHRG, Blue STDBY) show charging progress, full charge, no battery, and fault status.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFlexible Input:\u003c\/b\u003e Choose between a convenient Type-C USB interface or solder joint input on the back. Recommended input voltage is around 5V.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e0V Activation \u0026amp; Trickle Charge:\u003c\/b\u003e Safely revive deeply discharged batteries with 0V activation and 2.9V trickle charging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHigh Power Output:\u003c\/b\u003e Delivers a maximum power of 5W, suitable for various applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eKey Features \u0026amp; Parameters:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eOperating Temperature:\u003c\/b\u003e -40°C ~ 80°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInput Voltage Range:\u003c\/b\u003e 4.2V ~ 6.5V\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOutput Voltage:\u003c\/b\u003e 4.2V - 28V (Adjustable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMaximum Power:\u003c\/b\u003e 5W\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCharging Current:\u003c\/b\u003e Up to 1A programmable linear charge current\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBattery Compatibility:\u003c\/b\u003e 3.7V Lithium (Li-ion 18650, Polymer, etc.)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eUnderstanding the Charging Indicator Lights:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe module uses two LEDs to indicate its working status:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCharging:\u003c\/b\u003e Red light (CHRG) is bright, Blue light (STDBY) is off.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFully Charged:\u003c\/b\u003e Blue light (STDBY) is on, Red light (CHRG) is slightly dim.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBoost Output Active:\u003c\/b\u003e Behavior may vary based on output power. Red light might stay on during charging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eNo Connection\/No Load:\u003c\/b\u003e Blue light is on, Red light is slightly dim.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eSimple Setup \u0026amp; Battery Connection Guide:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe module supports both Type-C USB and solder joint inputs. Both output ports are identical and wired in parallel.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eConnecting Your Battery:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eFor Batteries with a Protection Board:\u003c\/b\u003e Choose a module \u003ci\u003ewithout\u003c\/i\u003e built-in discharge protection. After connecting B+ and B-, you \u003ci\u003emust\u003c\/i\u003e short the 'T' point for proper charging and discharging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFor Batteries WITHOUT a Protection Board:\u003c\/b\u003e \u003cb\u003eCRITICAL:\u003c\/b\u003e Choose a module \u003ci\u003ewith\u003c\/i\u003e discharge protection (if available for this specific product, or ensure your battery has external protection). Connecting the battery to B+ and B- \u003cb\u003ewithout\u003c\/b\u003e a protection board requires you \u003cb\u003eNOT\u003c\/b\u003e to short the 'T' point, as this will disable the discharge protection and can damage your battery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eAdjusting Output Voltage:\u003c\/b\u003e Once wires are connected, use a small screwdriver to adjust the desired output voltage via the onboard potentiometer.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eImportant Usage Notes:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eNormal Heating:\u003c\/b\u003e This product uses linear charging, so some heat generation during operation is normal and safe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eParallel Connection Only:\u003c\/b\u003e Batteries should only be connected in parallel, never in series.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOptimal Charging Current:\u003c\/b\u003e The ideal charging current is 0.37C of your battery's capacity (e.g., 400mA for a 1000mAh battery).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCable Quality Matters:\u003c\/b\u003e Ensure charging wires are not too thin or too long to minimize resistance, which can affect battery voltage after charging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eGood Battery Connection:\u003c\/b\u003e A solid connection to the battery is crucial to prevent significant voltage drop after charging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHeat with High Boost Current:\u003c\/b\u003e It's normal for the module to generate heat when the boost current is high. Higher power output equals more heat. The chip has built-in overheating protection for safe operation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sun Cheong Computer Company Limited","offers":[{"title":"Default Title","offer_id":43617681899671,"sku":"","price":75.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0440\/4022\/4919\/files\/lithium-battery-charger-board-components.jpg?v=1755676500","url":"https:\/\/scccltd.com\/en-tw\/products\/lithium-li-ion-18650-step-up-boost-module","provider":"Sun Cheong Computer Company Limited","version":"1.0","type":"link"}