This is the 30A ePowerBox Switching Power Supply from Hitec.

FEATURES: Dual port 30A 540W high output power supply with variable voltage
            supports up to 9S LiPo battery chargers
          Dual USB ports supply 5V DC at up to 1000mAh-ideal for MP3 players,
            mobile phones and digital cameras
          Binding post/bullet banana plug ports
          Integrated LCD voltage and amp display
          Built-in temperature, circuit, and overload protection
          Variable speed cooling fan
          One year limited warranty through Hitec beginning at date of purchase

INCLUDES: 30A ePowerBox Switching Power Supply with AC Power Supply Cord with
            3-prong Plug (110V North America standard), Instruction Sheet

SPECS:    Input Voltage: 100-240V AC
          Input AC Frequency: 50-60Hz
          Output Voltage: 12-18V DC
          Output Current: 30A @ 12V DC/540W max
          Current Overload Protection: <31A 500MS
          Operating Temperature: 0-40°C (32-104°F)
          Dimensions: 8.58 x 5.47 x 2.34" (218 x 139 x 59.5mm)
          Weight: 3.57lbs (1.62kg)
          Input Fuse: 10A
          LCD Display: Voltage Precision +-0.3V
                       Current Precision +-0.3A
          Output Voltage Ripple: <150mV
          Power Efficiency: 89%
          Power Factor: >0.98
          Over Temperature Protection: <65°C (149°F)
          Operating Humidity: 0-90%

                                                                   jxs 02/12/13
                                                                         ir/jxs