Features and specifications:
1) Input: DC12V, 2.5A
2) Output:
    a) DC 1.4 V 3,000mA (AA) x 4
    b) DC 1.4 V 1,500mA (AA) x 4
3) Operating temperature: 0 - 35oC
4) Size (W x L x H): 78 x 115 x 42mm 
5) Weight: 110g (batteries not included)
6) Charges 1 ~ 4 AA / AAA Ni-MH rechargeable batteries
7) 4 independent channel, 4 LED Indicate charging status
8) Switch power, worldwide voltage 100 - 240V
9) Over voltage and over heat protection
10) Safety features:
     a) Voltage monitoring functions:
         i) -?V control
         ii) Auto switch to trickle mode after fully charged
     b) Safety timer: auto cut off after 1 hours of standard charging
     c) Temperature monitoring function: over-heat protection
     d) Bad battery, alkaline and primary battery detection