{"product_id":"250w-12v-bifacial-monocrystalline-fixed-solar-panel","title":"250W 12V Bifacial Monocrystalline Fixed Solar Panel","description":"\u003cp\u003e\u003cstrong\u003eThis 250W 12V bifacial monocrystalline fixed solar panel is a compact option for compatible caravan, camper, 4WD, marine and off-grid battery systems.\u003c\/strong\u003e Its 760 × 585 mm frame suits installations where available mounting area matters, while the bifacial design can collect additional reflected light through the rear surface when it remains exposed.\u003c\/p\u003e \u003ch2\u003e250W Bifacial Solar Panel: Key Specifications\u003c\/h2\u003e \u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003eSpecification\u003c\/th\u003e \u003cth\u003eDetails\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003eMaximum power (Pmax)\u003c\/td\u003e \u003ctd\u003e250W\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMaximum-power voltage (Vmp)\u003c\/td\u003e \u003ctd\u003e18V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMaximum-power current (Imp)\u003c\/td\u003e \u003ctd\u003e13.9A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eOpen-circuit voltage (Voc)\u003c\/td\u003e \u003ctd\u003e21.4V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eShort-circuit current (Isc)\u003c\/td\u003e \u003ctd\u003e14.8A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eDimensions\u003c\/td\u003e \u003ctd\u003e760 × 585 × 30 mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eWeight\u003c\/td\u003e \u003ctd\u003e8 kg\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFrame\u003c\/td\u003e \u003ctd\u003eAnodised aluminium\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFront protection\u003c\/td\u003e \u003ctd\u003eTempered glass\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eStated output warranty\u003c\/td\u003e \u003ctd\u003e25 years; confirm the applicable warranty terms before purchase\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eHow Bifacial Solar Panels Work\u003c\/h2\u003e \u003cp\u003eA bifacial solar panel can generate power from direct light on the front surface and reflected light reaching the rear. The additional contribution is not fixed: it depends on the mounting clearance, surface reflectivity, sun angle, shading, temperature and installation design.\u003c\/p\u003e \u003cp\u003eFor better rear-side exposure, avoid mounting the panel directly against an opaque surface where no reflected light can reach the back. A light-coloured roof or other reflective surface may help, but actual output should be measured under the conditions of your installation.\u003c\/p\u003e \u003cp\u003eCompare other sizes and formats in our \u003ca href=\"\/collections\/bifacial-solar-panels\"\u003ebifacial solar panel range\u003c\/a\u003e.\u003c\/p\u003e \u003ch2\u003eSuitable Caravan, 4WD \u0026amp; Off-Grid Applications\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eCaravan and camper-trailer roof arrays where the dimensions and weight suit the available structure\u003c\/li\u003e \u003cli\u003e4WD canopies and touring systems with compatible mounting\u003c\/li\u003e \u003cli\u003eSheds, cabins and small independent-power systems\u003c\/li\u003e \u003cli\u003eMarine or remote installations where the mounting method and environment are suitable\u003c\/li\u003e \u003cli\u003eCharging compatible 12V lithium or AGM battery systems through an appropriate controller\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eBefore ordering, measure the mounting area and allow for brackets, cable routing, ventilation and service access. Confirm that the supporting surface and mounting hardware are suitable for an 8 kg framed panel and the loads expected during travel or severe weather.\u003c\/p\u003e \u003ch2\u003eCharge Controller Compatibility\u003c\/h2\u003e \u003cp\u003eDo not connect the panel directly to a battery. Use a compatible solar charge controller and check its maximum PV voltage, input current, charging current and supported battery chemistry.\u003c\/p\u003e \u003cp\u003eFor controller selection, use the panel’s 21.4V Voc and 14.8A Isc, then allow the safety and temperature margins required by the controller manufacturer. When combining panels, series wiring increases voltage and parallel wiring increases current. Recalculate the complete array before connection.\u003c\/p\u003e \u003cp\u003eBrowse \u003ca href=\"\/collections\/mppt-solar-charge-controllers\"\u003eMPPT solar charge controllers\u003c\/a\u003e, \u003ca href=\"\/collections\/lithium-batteries\"\u003elithium batteries\u003c\/a\u003e and \u003ca href=\"\/collections\/agm-deep-cycle-batteries\"\u003eAGM deep-cycle batteries\u003c\/a\u003e when planning a matched system.\u003c\/p\u003e \u003ch2\u003eWhat This Panel Can Produce\u003c\/h2\u003e \u003cp\u003eThe 250W rating is measured under standard test conditions. Real output varies with sunlight, panel temperature, orientation, shade, cable losses, controller performance and rear-side exposure. Use realistic daily energy requirements and local solar conditions when sizing the array and battery bank.\u003c\/p\u003e \u003cp\u003ePartial shade can materially reduce output. Install the panel where roof vents, aerials, racks and nearby equipment are unlikely to cast regular shadows across the solar cells.\u003c\/p\u003e \u003ch2\u003eInstallation \u0026amp; Safety\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eFollow the product and controller manufacturer’s wiring instructions.\u003c\/li\u003e \u003cli\u003eUse correctly sized solar cable, connectors, fuses and isolation equipment.\u003c\/li\u003e \u003cli\u003eKeep the total array voltage and current inside every connected device’s limits.\u003c\/li\u003e \u003cli\u003eUse suitable mounting hardware and weatherproof cable entries.\u003c\/li\u003e \u003cli\u003eObtain appropriately qualified installation advice where structural or regulated electrical work is involved.\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003e250W Solar Panel FAQs\u003c\/h2\u003e \u003ch3\u003eIs this a “12V” solar panel?\u003c\/h3\u003e \u003cp\u003eIt is designed for use in compatible nominal 12V charging systems through a suitable controller. The panel’s operating voltage is listed as 18V, so it must not be connected directly to a 12V battery.\u003c\/p\u003e \u003ch3\u003eWill bifacial output always be higher?\u003c\/h3\u003e \u003cp\u003eNo. Additional rear-side generation depends on reflected light reaching the back of the panel. A flush-mounted installation with an obstructed rear surface may receive little bifacial benefit.\u003c\/p\u003e \u003ch3\u003eCan I connect two panels together?\u003c\/h3\u003e \u003cp\u003ePotentially, but the controller, cabling and protection must suit the combined voltage and current. Confirm the proposed series or parallel configuration before connection.\u003c\/p\u003e \u003ch3\u003eIs it suitable for lithium and AGM batteries?\u003c\/h3\u003e \u003cp\u003eIt can charge compatible lithium or AGM systems when used with a controller configured for the battery voltage, chemistry and manufacturer requirements.\u003c\/p\u003e \u003cp\u003eCheck the dimensions and electrical specifications against your installation before ordering. For alternative fixed-panel sizes, browse our \u003ca href=\"\/collections\/fixed-solar-panels\"\u003efixed solar panel collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"StarPower Solar","offers":[{"title":"Default Title","offer_id":55052068913491,"sku":null,"price":75.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1076\/9324\/4755\/files\/s-l1600_95205e16-f119-4c57-b541-fea561af81a6.webp?v=1790284477","url":"https:\/\/progradewarehouse.com\/products\/250w-12v-bifacial-monocrystalline-fixed-solar-panel","provider":"PRO GRADE WAREHOUSE","version":"1.0","type":"link"}