This 24 volt alternator has fast and full charge of batteries for start and service. Its power supply for consumers is 12 and 24 volts. Alternators in 24V systems are usually between 500 and 600 amps. Currently, the products on the market are none of these numbers higher and stronger and are not comparable to this dynamo. The best way to check the correct voltage is to use a multimeter to measure the electrical current through the wire. To check the back of your alternator, check to see if it has two or three wired connections. Check your battery voltage to make sure it is charged. Marineland always has the best deals for its customers in Dubai, Sharjah, UAE.