LED Battery indicator Mobile Charger Power bank circuit board 3.7V up to 5V 2A boost

Product Features Equipped with dual USB 5V 2A output to accelerate your smartphone, tablet charging time Intelligent power output, according to the load automatically adjusts the output current, with overcharge protection, over discharge protection, short circuit protection, overcurrent protection, over temperature protection Protect the connected devices without having to worry about overcharging of batteries or overcharging of batteries, Onboard four LEDs for displaying battery capacity during charge or take-up (0-25% (one LED), 25% -50% (two LEDs), 50% -75% (three LEDs ), 75% -100% (four LEDs)) LED lights with multiple operating modes (double press, turn on light; then single touch, LED flashes, press again, SOS) Product Specifications: Input port: micro USB Input power: DC 5V 1A Output power: DC 5V 2A Power Conversion: 90% Protection: overcharge protection, over-discharge protection, short circuit protection, over-current protection, over-temperature protection