Brand Name: YYHQQBAD Quick charge: Yes Data Transmission: Other High-concerned chemical: None Intelligent Charge: Yes Output Power: 37.5-50(include50) Origin: Mainland China Display screen: No Voltage range: Low voltage non-USB (below 75V DC, below 50V AC) Power Source: DC Type: Electric Certification: CE Use: Standard Battery Model Number: 42V Package: Yes Output Interface: USB Choice: yes semi_Choice: yes