{"product_id":"renogy-400w-12v-24v-monocrystalline-solar-premium-kit-w-rover-40a-charger-controller","title":"400W 12V\/24V Solar Premium Kit | 400W Solar Panels, 40A Charger Controller","description":"\u003cp\u003e\u003cstrong\u003e400W of panel and a 40A MPPT controller.\u003c\/strong\u003e For most conversions this is the right answer — enough roof to run a fridge, lights, a laptop and a water pump through summer without touching the alternator, and four ways to arrange it.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e400W\u003c\/strong\u003e at STC, choice of four panel configurations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRover 40A MPPT\u003c\/strong\u003e, 12V\/24V auto-detect\u003c\/li\u003e\n\u003cli\u003eController accepts 520W at 12V, 1,040W at 24V\u003c\/li\u003e\n\u003cli\u003e200W panel Vmp 31.03V, Voc 37.44V, 20.7% efficiency\u003c\/li\u003e\n\u003cli\u003e200W panel 1262 × 764 × 30mm, 10.6kg\u003c\/li\u003e\n\u003cli\u003eCertified to FCC, CE, RoHS and RCM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTwo panels or four\u003c\/h3\u003e\u003cp\u003eTwo 200W modules is less wiring, fewer brackets and a faster install — but each one needs a clear 1262 × 764mm, and a shaded corner costs you half the array. Four 100W modules cost more in brackets and connectors but fit around roof furniture and degrade more gracefully under partial shade. On a long-wheelbase van with a clear roof, take the two. On a cluttered roof, take the four.\u003c\/p\u003e\u003ch3\u003e400W is the practical sweet spot\u003c\/h3\u003e\u003cp\u003eBelow 300W a van still leans on the alternator in summer. Above 500W you are usually adding weight and roof space for energy you cannot store. 400W into a 200Ah bank is a balanced system — and at 12V it draws around 33A, comfortably inside the 40A controller.\u003c\/p\u003e\u003ch3\u003eBefore you order\u003c\/h3\u003e\u003cp\u003eController input is capped at 95V DC, so panels wired in series need checking against that before you commit to a string. The kit does not include mounting hardware, a cable gland or the battery-side fuse.\u003c\/p\u003e","brand":"Renogy","offers":[{"title":"Default Title","offer_id":51358082171047,"sku":"RNG-KIT-PREMIUM400DC-RVR40-UK","price":365.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0770\/1158\/3143\/files\/RNG-KIT-PREMIUM400DC-RVR40-UK_740d1bb6-f927-4a5e-bd4e-c3576b6d79a6.jpg?v=1789800195","url":"https:\/\/shop.roamwired.com\/products\/renogy-400w-12v-24v-monocrystalline-solar-premium-kit-w-rover-40a-charger-controller","provider":"Roam Wired Shop","version":"1.0","type":"link"}