Source Universal wall adapter UL SAA PSE CE 12v 5a 4amp power supply 18 volt 2.5 amp on m.alibaba.com
18v 4a Dc Power Adapter Eu/uk/us/au Universal 18 Volt 4 Amp 4000ma Power Supply Input 100-240v Dc 5.5x2.5 Power Transformer - Ac/dc Adapters - AliExpress
Amazon.com: 18V 2A 1A Power Supply 36W Switching AC DC Adapter 10 Multi Jacks Universal Adaptor Regulated 18 Volt 1.8A 1.6A 1.5A 1.2A 800mA 500mA Charger 6.0FT Power Cord Plug ETL Listed