Please confirm model, voltage before ordering.please test the parts before install.DIY 1.2" LCD Dual-USB Output 5V Boost PCB Module w/ LED for Mobile Power - Silver + BlueQuantity：1 Color：Green + silver Material：FR4 SpecificationMax. output: 5V / 2.1A, 5V / 1A; Boost from 3V~4.2V to 5V; Dual USB output; The boost efficiency for 5V / 2.1A output 0.5A is 85%, output 1A is 80%; 1.2" LCD; Double-click the switch, the singlechip will output 3.26V 40mA current to drive the LED light, double-click again, it will be off; Interface: 2 x USB 2.0, 1 x Micro USB Application：DIY Dual-USB output boost board module for mobile power Max. output: 5V, 1A, the other USB port is 5V, 2.1A; PCB size: 65.2 x 27 x 15.6mm; Boost the voltage from 3V~4.2V to 5V; Lithium battery charging management: overcharge protection, standard constant current and constant voltage charging, max. charging current: 5V, 1A; Charging interface: 1 x micro USB; Lithium battery protection: overcharge, over-discharge, overcurrent, short-circuit; The singlechip with count the remind battery capacity according the voltage and show as percentage on the LCD; The singlechip shows the in / out and the output port on the LCD; Intelligent energy-saving, the LCD backlight will auto shut off in 10 seconds no operation and auto turn off the screen in 20 seconds; The board will automatically output as detect power demand, the screen will show the battery capacity during output, the output current will not larger than the largest current of the charging device; Note: Please make sure the battery or battery pack is 3.7V lithium battery (full charge: 4.2V, full-discharge: 3V), 18650 lithium battery or polymer lithium battery is OK; Please make sure the battery pack is parallel connection, the total voltage cannot be over 4.2V; The maximum current of the battery with protection PCB cannot be over 4A Packing List
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