10-30V input with cigarette plug, 4.2V Li-ion car charger useful for 3.6V 3.7V Lithium battery packs, 
This is a sophisticated smart battery cigarette-lighter style charger which will work with 1 cell Lipo Li-ion battery pack, which has a wide DC input for use in 12V 24V vehicles and planes. 

Input:                                    10-30VDC cigarette plug
Output:                                  4.2V 800mA
Suitable for:                           3.6V/3.7V Li-ion Lipo battery
Charging mode:                      CC-CV