Output Power Minimum: 7 watts Typical: 10 to 25 watts Maximum: 30 watts Output Voltage Minimum: 4 volts Typical: 5 to 10 volts Maximum: 11 volts Output Current Typical: 2 to 8 amps Maximum: 10 amps Device Resistance Minimum: .3 ohms Typical: 1.5 ohms Maximum: 3.3 ohms Input voltage Minimum: 3.2 volts Typical: 3.7 volts Maximum: 4.3 volts Input voltage Minimum: 1.5 amps Typical: 6.0 amps Maximum: 12.0 amps Efficiency Minimum: 93% Typical: 95% Maximum: 97% Lock, stealth and sleep modes Uses 18650 batteries but only high rate lithium-ion batteries can meet high-current input