This is a great little charger that has a small foot print. Although this charger is small it still packs a very large punch. this charger can put out 50 watts of power and can charge up to a 20 cell nimh battery. This charger also charges up to 6 cell lipo, lilon, and LiFe batteries. If you need to discharge a battery this charger can do that too. It can discharge at 5 watts. This may seem slow, but if you set it to maximum discharge and leave it over night the charger works great. If you need to charge and discharge a battery continuously this charger can do that too, just hit the cycle button. You can cycle a battery 5 times. This takes about 36 hours with an 8.4 volt 5000 mah rc car battery pack. This charger can also charge lead acid batteries up to 20 volts. When you buy this charger make sure you buy the computer cable. This allows you to graph the volts, amps, capacity, and temperature of you battery. When you are done with the graphs you can save them to your computer for easy viewing later. All in all this is a great little charger that I would highly recommend to a friend or fellow rc enthusiast.