Samlex PST-120-12 Pure Sine Wave Inverter 120 Watts AC DC 120 VAC USB Port 12V USB Charging Port: 5V, 500mA Temperature controlled fan  runs quieter, reduces energy consumption 12V cigar plug adapter included High output current surge, LED indicators for power and protection Low battery alarm / shut down, low idle power draw of less than 0.5 Amps