3-step charger control(pre-charger, CC-CV)     
Dual color LED indicator                   
Dust & Water proof case                  
Case dimension: 150x70x35(mm)             
Protection: short circuit protection              
                 Reverse polarity connect protection             
                 Over current protection                        
                 Over voltage protection                       
Option:1. NTC inside                         
             2. 100% cut off when battery fully charged