Specification:
.Operation voltage range : DC 11.0 ~ 18.0 Volt 
.Circuit power : AC to DC adaptor (DC 11.0 ~ 18.0V / 5A) 
.Max. charge power 50W 
.Max. discharge power 5W  
.Charge current range : 0.1~5.0A  
.Discharge current range : 0.1~1.0A  
.Current drain for balancing Li-Po : 300mAh/cell 
.NiCd / NiMH battery cell count : 1~15 cell  
.Li-Ion / Polymer cell count : 1~6 series  
.Pb battery voltage : 2V~20V  
.Weight : 277g (Net Weight)   
.Weight : 425g (Gross Weight)  
.Dimensions : 133 x 87 x 33 mm

Highly recommended user to use with Suny DC / AC adapter , please check out:
http://airsoft.tiger111hk.com/p15954/SUNY-AC/DC-Adapter-%28Model-:-PD1205%29/product_info.html