Brand Name: KLW Quick charge: Yes Data Transmission: no High-concerned chemical: None Intelligent Charge: Yes Output Power: ≤37.5 Origin: Mainland China Display screen: No Voltage range: USB (5-20V DC) Power Source: DC Type: Electric Type: USB Certification: CE Certification: FCC Use: Standard Battery Model Number: BC4A-500 Package: Yes Output Interface: USB Color: Black Compatible: AA AAA Alkaline battery Input voltage current: 5V 0.5A Output voltage: Alkaline 2V Output Current: Alkaline 100mA*4 Certification: CE,FCC,and RoHs Feature: Multi-function Battery Number: 4pcs Choice: yes semi_Choice: yes