Input::  12V DC    300mA
Output:  4.2VDC   300mA*1  300mA *2
MCU control
End-of-charge voltage detection assures
 the safe and full charge any time
 Short-circuit protection
 Over voltage cut-off protection
Complete individual channels
Charge Method :CC/CV
Reverse polarity protection
Time control 
Battery reset
Bad ,no-rechageale battery test

2 pcs Individual LED indicate:
Red on ----- -Battery Charging
Green flash -- Charge 80%-90% complete
Green on ------ Charge 90%-100% complete
Turn off ------- Stand by without battery in compartment
                         Loose connections (replace battery);
                        Polarity reversed (load the battery into charger in right side)
                        Low voltage less than 0.5V-2.0V
                       Temperature >60 degree