Duratrax Onyx 210 charges 4-8 cell NiCd or NiMH (4.8 - 9.6V) cells with a capacity range of 750-7500mAh NiCd and NiMH compatibility with custom peak detection Pushbutton controls, audible tones and a custom LED with backlight for easy setup and use Selectable charge currents of 800mA, 1.5A, 3A and 5A Automatic TRICKLE charge fills pack completely after peak charge for optimum battery performance Precise peak detection algorithm with automatic TRICKLE charge fills packs completely for optimum voltage and run time Built-in jack included for charging 4 or 5 cell NiCd or NiMH receiver batteries for nitro models and even transmitter batteries LCD shows battery voltage, charge current, time, capacity, battery type and more Small, lightweight switching AC power supply delivers up to 5 amps of charge current Solid state reverse polarity and current overload safety devices Five year warranty