This is the ElectriFly TRITON2 Computerized Battery Charger, Discharge and Cycler from Great Planes.
 
FEATURES: 
 -Great for many applications including Airplane and Heli Batteries, Tx and Rx batteries, Field Batteries and more
 -Handles 1-24 cell NiCd/MH (1.2 - 28V)
 -1-5 cell Li-Ion or LiPo (3.6 or 3.7V cells)
 -6, 12, 24V Pb cell (2V per cell)
 -Precision Zero DeltaV Peak Detection with adjustable sensitivity for NiCd and NiMH batteries.
 -"Constant Current / Constant Voltage" charge method for Pb and
 -Li-Ion/LiPo batteries
 -Top-Off Charge feature fully charges NiMHs without overheating
 -0-250mA adjustable TRICKLE Charge current (NiCd and NiMH only)
 -.1-3A Adjustable Discharge Current
 -Adjustable Discharge Cutoff Voltages for NiCd/MH, pre-set voltages for Pb and LiPo/Ion
 -Perform 1 to 10 cycles (NiCd/MH only)
 -Recall data for 10 full cycles
 -Configure up to 10 batteries in memory for instant, easy recall and charger setup
 -Displays Input and Output Volts, Peak Volts, Avg Dsch Volts, Chg and
 -Dsch Capacity, Currents and Time, Error Messages (No Battery Connected, Open Circuit, and Reverse Polarity)
 -Audible sound cues aid in programming and notification of function changes
 -Warning messages for Improper Input Voltage, Poor Connections,
 -Unsuitable Battery Condition, Reverse Polarity on output
 -Safety features include Cool-Off Time Delay, Maximum NiMH Charge
 -Input, Fast Charge Safety Timer, Current Overload and Reverse
 -Polarity Protection
 -Built-in cooling fan for better charge efficiency and extended charger life
 -Small and lightweight, with a super-sturdy aluminum case for rugged durability
 
 INCLUDES: 
 ElectriFly TRITON2 Computerized Battery Charger, Discharger and Cycler with banana plugs with mating alligator clips and instruction manual