Dual internal fan DIF design provides maximum cooling technology improves performance Equipped with remote sense which can reduce battery charge time by 50% improves efficiency Superior output producing up to 200 amps at road speed and 140 amps at idle supports high performance OE approved assuring OE quality reliability and performance for aftermarket replacements ensures reliability Remote sense utilizes a second wire that reads the actual voltage at the battery signals the alternator to boost output to compensate for voltage drop ensuring 14 volts at the battery proper voltage forces more current into the battery bringing it to a full state of charge between vehicle stops enhances charging performance