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When connecting to a single-phase 120V supply, the L1 input of the Quattro-II 2x120V will accept incoming power for charging and passthrough while combining the L1 and L2 outputs for single-phase 120V on each line.<\/span><\/p> <p class=\"MsoNormal\"><span lang=\"EN-AU\" style=\"\">The Quattro switches to inverter operation when no AC sources are available. The inverter output is also 120V single-phase. In inverter mode, the Quattro-II 2x120V internally connects both lines L1 and L2 together to provide 120VAC to loads on either output. Therefore, in all connection circumstances, both sides of a distribution panel will be supplied with 120V. However, 240VAC is only available when the Quattro is supplied by a split phase 120\/240VAC source. This prevents heavy loads such as water heaters or 240V air conditioners from discharging the battery.<\/span><\/p> <p class=\"MsoNormal\"><span lang=\"EN-AU\" style=\"\">The Quattro-II 2x 120V has all of the expected features of our versatile inverter\/charger range, including PowerControl, PowerAssist, Input Current Limit, two AC outputs, as well as parallel and 3-phase configuration for larger capacity VE.Bus systems. Suitable for LiFePO4 batteries and a variety of other battery technologies.<font face=\"Verdana, sans-serif\"><span style=\"font-size: 12pt;\"><o:p><\/o:p><\/span><\/font><\/span><\/p>","modified_at":"2026-09-04 19:10:02","image":"https:\/\/www.victronenergy.com\/upload\/products\/Quattro-II 2x120V.png","sku_information":[{"sku":"QUA122305130","created_at":"2021-09-02 17:02:03","html_description":null,"is_eol":false}],"documents":[{"id":9660,"sku":["QUA122305130","QUA242305130"],"name":"Quattro-II 3kVA 2x 120V","document_type":"Datasheet","url":"https:\/\/www.victronenergy.com\/upload\/documents\/Datasheet-Quattro-II-3kVA-2x120V-EN-.pdf","notes":""},{"id":9655,"sku":["QUA122305130"],"name":"Quattro-II 12\/3000\/120-50\/50 2x120V","document_type":"Enclosure dimension","url":"https:\/\/www.victronenergy.com\/upload\/documents\/Quattro-II-12V-3000VA-2x120Vac.pdf","notes":""},{"id":9654,"sku":["QUA122305130"],"name":"Quattro-II 12\/3000\/120-50\/50 2x120V (3D)","document_type":"Enclosure 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