Brand N/A Model FX-608-PCBA Quantity 1 Color Green Material PCB Specification 3V~4.2V boost to 5V dual-USB output Features DIY mobile power source supply board Application Mobile phone tablet PC and other devices needs 5V input English Manual/Spec No Other 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; Note: For different charging identification circuit from different manufacturer so we cannot guarantee this module is compatible with all the mobile phone such as some Nokia need the original charging cable; Some Samsung mobile phone need to make the data sync pin short circuit; It compatible with most the Apple devices Packing List 1 x Module