Main Features:
● LED screen displays the charging status clearly
●Intelligently identify input power and automatically adjust suitable charging method， which supplys 9 output level for almost every kind of digital product on the market
● CC / CV charging， to make sure the battery is full charged and won't be over charged. Each slot controls independently， mixed charging mode
● Can be used as a UPS mobile power bank of laptop， replacing the original battery

Parameters:
Input: DC 16 - 21V 5.5x2.5mm interface
DC output: 3.6V / 6V / 9V / 12V / 15V / 16V / 19V / 21V， max. 3.3A
USB output: 5V， max. 3A
Applicable batteries: Compatible with 3.7V 18650 various kinds of cylindrical rechargeable batteries
There has a combination of 3 in series and 2 in parallel resistors with the highest power of 75W (DC port up to 65W， compatible with most kinds of notebooks below 19V 4A; USB port up to 22.5W)