40-60Hz Frequency Operated Battery Chargers are provided with reverse polarity protection by fuse current limit. These Battery Chargers are offered with a cooling fan and have a sturdy construction. These Battery Chargers function at 40-60Hz frequency rate and operate in a range of 180-270V AC. 40-60Hz Frequency Operated Battery Chargers are made from quality grade material that ensures optimum performance for longer period of time.