{"product_id":"renogy-rover-li-40-amp-mppt-solar-charge-controller","title":"Rover Li 40 Amp MPPT Solar Charge Controller","description":"\u003cp\u003e\u003cstrong\u003e40A MPPT, 100V input, 520W of panel at 12V.\u003c\/strong\u003e The step up from the 30A Rover, for a roof that has outgrown 400W. Renogy also list this page in 20A, 30A and 60A — the figures below are the 40A.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e40A rated charge current\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e15–100V DC\u003c\/strong\u003e solar input range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e520W at 12V\u003c\/strong\u003e, 1,040W at 24V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12V\/24V auto-detect\u003c\/strong\u003e for non-lithium\u003c\/li\u003e\n\u003cli\u003eCharges over-discharged lithium packs\u003c\/li\u003e\n\u003cli\u003eIP32, 238 × 172 × 77mm, 2.0kg, 3-year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNote the 15V lower limit\u003c\/h3\u003e\u003cp\u003eThe input range starts at 15V, not zero. A single 12V nominal panel on an overcast winter afternoon can sit below that, at which point the controller simply will not start tracking. It is not a fault, and it is another argument for wiring two panels in series rather than parallel on a UK roof — the string voltage stays above the threshold for more of the day.\u003c\/p\u003e\u003ch3\u003eSame case as the 30A\u003c\/h3\u003e\u003cp\u003eIdentical 238 × 172 × 77mm footprint and 2.0kg weight, so if you are choosing between them the mounting space is not a factor — only the array size and the price. Worth noting the 40A carries a three-year warranty against the 30A's two.\u003c\/p\u003e\u003ch3\u003eBefore you order\u003c\/h3\u003e\u003cp\u003eIP32, so a dry interior cupboard. Terminals take 8AWG (10mm²), which is the practical limit — for a 40A controller over a long run, that is worth checking against your volt drop calculation before you commit.\u003c\/p\u003e","brand":"Renogy","offers":[{"title":"Default Title","offer_id":51358097440935,"sku":"RNG-CTRL-RVR60-BT-UK2","price":72.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0770\/1158\/3143\/files\/01__04254.1734338473.1280.1280.jpg?v=1789800763","url":"https:\/\/shop.roamwired.com\/products\/renogy-rover-li-40-amp-mppt-solar-charge-controller","provider":"Roam Wired Shop","version":"1.0","type":"link"}