18V Power Supply Center Positive: Input AC 110-240V 50/60Hz, Output DC 18V 0-2A(2000mA Max) 36 Watts. DC plug size: 5.5x2.1mm. DC plug polarity: inner positive (+), outer negative (-). Cable length: 5 Ft 10 Interchangeable Tips: This 18 volt power supply with 10 DC plug adapters is designed for 18V household electronics, compatible with Brookstone Big Blue Party Studio Bluetooth Speaker, Cordless Drill, Humidifier, Sound bar, vacuum cleaner, LED Light, Altec Lansing IMW889 speakers, etc. Tips: LED connector, 6.5x4.4mm, 6.3x3.0mm, 5.5x2.5mm, 5.0x3.0mm, 4.8x1.7mm, 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm, 2.5x0.7mm Built-in smart chip: This 36 watt power adapter provides a stabilized output voltage of 18V and can intelligently regulate the output current, 18V 2A power supply compatible with 18V 1.9A 1.8A 1.7A 1.6A 1.5A 1.4A 1.3A 1.2A 1.1A 1A 900mA 800mA 500mA 300mA 200mA 100mA power supply power cord Multiple Protection: Basicvolt 18V AC/DC adapter has over-voltage protection, over-current protection, over-heat protection and short-circuit protection for safer use What You Get: 36W 18V 2A power adapter, 10 connectors, instruction manual. If you need help, please feel free to contact our friendly email support team Basicvolt 18V 2A AC DC Adapter Power Supply Wall Charger Compatible for Altec Lansing mix 2.0 Rockbox XL IMW999 IMW889 Bluetooth Speakers and More 18 Volts Power Supply Charging Cable Cord