CH-UNLI7412 is a UL listed smart battery charger designed to charge 7.4 volt Li-Ion/Li-Polymer batteries with a capacity higher than 1600mah.

Specification 

• Input
  • Voltage: 100 -240VAC
  • AC power plug type: USA 
  • Current: 0.2VAC
  • Max. input power:16W
  • Rating frequency:50/60Hz
• Output
  • Vout:8.4VDC 1.2A
  • Cut-off:  automatically power off when battery pack is full at 8.4V
  • Connector Type:  4' 11" long 5.5 x 2.1 x 12mm male barrel connector
• Dimension of the charger (LxWxH): 88mm(3.5") x 52mm(2.0") x 30mm(1.2")
• Dimension of the circuit board inside (LxWxH): 70mm(2.76") x 45mm(1.78") x 1.6mm(0.06")
• Weight: 4.9Oz (139grams)
• Battery: 7.4V Li-Ion/Polymer Battery with capacity  >=1600 mAh 
• Protection: Output shorted and overload protection
• LED Indicator:
  • Red - Charging
  • Green - Fully charged
• Efficiency: >70 %
• Operate Temperature: -10^oC(14^o F) ~ +40^oC(104^o F)  
• Humidity: <+90
• Charge time = (Ah rate of the pack x 1.5) / 1.2A charge current
  •  1000 mAh = 1 Ah