{"product_id":"victron-bluesolar-pwm-duo-20a","title":"Victron BlueSolar PWM DUO-LCD\u0026USB 12\/24V-20A Charge Controller | SCC010020060","description":"\u003cp\u003eThe Victron BlueSolar PWM DUO-LCD\u0026amp;USB 12\/24V-20A (SCC010020060) is a dual-output PWM solar charge controller for 12V and 24V battery systems. It delivers up to 20A of charge current and includes a built-in LCD display with a USB output port, making it suited to small off-grid installations, caravans, boats and remote power setups.\u003c\/p\u003e\u003ch2\u003eKey features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual battery output (DUO)\u003c\/strong\u003e, charges two separate battery banks from a single solar input.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem voltage\u003c\/strong\u003e, 12V and 24V, with automatic voltage detection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharge current\u003c\/strong\u003e, up to 20A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay\u003c\/strong\u003e, built-in LCD showing battery voltage, charge current and charge state.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB output\u003c\/strong\u003e, 5V port for charging phones, tablets or other USB devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharge algorithm\u003c\/strong\u003e, PWM (Pulse Width Modulation).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e, 0.377kg.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eHow it works\u003c\/h2\u003e\u003cp\u003ePWM charge controllers regulate the current flowing from the solar panel to the battery by switching the connection on and off at high frequency. As the battery approaches full charge, the controller reduces the average current delivered, avoiding overcharge without the tracking circuitry an MPPT controller uses. This keeps cost down on smaller systems where panel voltage is closely matched to the battery voltage.\u003c\/p\u003e\u003cp\u003eThe DUO output adds a second battery connection, useful on boats or campervans where a starter battery and a leisure battery need separate charging. The primary bank charges first; once it reaches its threshold the controller diverts charge to the secondary bank, so the secondary bank cannot draw down the primary.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCampervans and motorhomes with separate starter and leisure batteries.\u003c\/li\u003e\n\u003cli\u003eBoats and narrowboats with dual battery bank setups.\u003c\/li\u003e\n\u003cli\u003eSmall off-grid cabins, sheds or outbuildings on 12V or 24V systems.\u003c\/li\u003e\n\u003cli\u003eRemote monitoring stations or security installations with low power needs.\u003c\/li\u003e\n\u003cli\u003ePortable solar setups needing USB device charging alongside battery charging.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation notes\u003c\/h2\u003e\u003cp\u003eThis controller is for 12V and 24V off-grid battery systems only, not for grid-connected installations. Check that the solar panel's open-circuit voltage does not exceed the controller's rated input, and follow Victron's wiring guidance for correct sequencing between primary and secondary banks. Fit fuses on both battery and solar connections close to the source, and have the installation carried out by someone familiar with low-voltage DC systems.\u003c\/p\u003e\u003ch2\u003eWhat's in the box\u003c\/h2\u003e\u003cul\u003e\u003cli\u003e1x Victron BlueSolar PWM DUO-LCD\u0026amp;USB 12\/24V-20A charge controller\u003c\/li\u003e\u003c\/ul\u003e","brand":"Victron Energy","offers":[{"title":"Default Title","offer_id":52060520775968,"sku":"SCC010020060","price":47.76,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/8148\/1504\/files\/ledandsolar-scc010020060-1.webp?v=1785491794","url":"https:\/\/www.ledandsolar.co.uk\/products\/victron-bluesolar-pwm-duo-20a","provider":"LED \u0026 Solar","version":"1.0","type":"link"}