Dual 18650 Lithium Battery Charger Module O/P:4.2V/1A

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Dual 18650 Lithium Battery Charger Module O/P:4.2V/1A The Dual 18650 Lithium Battery Charger Module is a reliable and easy-to-use charging solution for lithium-ion batteries, commonly based on a dedicated linear charging IC. It supports constant-current and constant-voltage charging, ensuring batteries are charged efficiently while maintaining safety and longevity. The module is suitable for USB or DC power sources, making it ideal for portable and embedded electronics projects. This charger module integrates essential protection and charging control functions, reducing the need for external components. It automatically manages the charging process, transitions to voltage regulation as the battery reaches full charge, and stops charging when complete. Its compact PCB design allows easy integration into DIY projects, power banks, robotics, and rechargeable battery systems using 18650 cells. Features: Supports charging of dual 18650 lithium-ion batteries. Automatic constant-current and constant-voltage charging. Built-in charge termination control. Over-temperature regulation for safe operation. Compact and lightweight PCB design. LED indicators for charging and charge completion. Simple wiring and easy integration into projects. Specifications: SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Vcc Input Supply Voltage — 4.0 5 8.0 V Icc Input Supply Current Charge Mode, RPROG=1.2k R PROG ​ = 1.2 k — 150 500 μA Standby Mode (Charge Terminated) — 55 100 μA Shutdown Mode ( RPROG R PROG ​ Not Connected, VCC<VBAT V CC ​ < V B A T ​ , or VCC<VUV V CC ​ < V U V ​ ) — 55 100 μA V floal Regulated Output (Float) Voltage 0∘C≤TA≤85∘C, IBAT=40mA 0 ∘ C ≤ T A ​ ≤ 8 5 ∘ C , I B A T ​ = 40 m A 4.137 4.2 4.263 V I bat BAT Pin Current RPROG=2.4k, Current Mode R PROG ​ = 2.4 k , Current Mode 450 500 550 mA RPROG=1.2k, Current Mode, VBAT=4.0V R PROG ​ = 1.2 k , Current Mode , V B A T ​ = 4.0 V 950 1000 1050 mA Standby Mode, VBAT=4.2V V B A T ​ = 4.2 V 0 -2.5 -6 μA I trikl Trickle Charge Current VBAT<VTRIKL, RPROG=1.2k V B A T ​ < V TR I K L ​ , R PROG ​ = 1.2 k 120 130 140 mA V trikl Trickle Charge Threshold Voltage RPROG=1.2k, VBAT Rising R PROG ​ = 1.2 k , V B A T ​ Rising 2.8 2.9 3.0 V V trhys Trickle Charge Hysteresis Voltage RPROG=1.2k R PROG ​ = 1.2 k 60 80 100 mV T lim Junction Temperature in Constant Temp Mode — — 145 — Applications: 18650 battery packs. DIY power banks. Portable electronics. Arduino and microcontroller projects. Robotics and automation systems. Rechargeable battery chargers. Embedded lithium battery solutions. Packages: 1x Dual 18650 Lithium Battery Charger Module O/P:4.2V/1A. Documents: Dual 18650 Lithium Battery Charger Datasheet.