{"product_id":"knightsbridge-5ft-83w-led-ultra-high-lumen-batten-with-emergency-4000k","title":"Knightsbridge 5ft 83W LED Ultra High Lumen Batten With Emergency 4000K","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe Knightsbridge 5ft LED batten is a 1525mm linear fitting built from pressed steel and polycarbonate, housing an integrated 83W LED module that delivers 11200lm output at 4000K cool white. The fitting includes a 3-hour maintained emergency function, allowing the batten to remain lit during mains power failure, making it suitable for commercial corridors, storage areas, workshops, and any space requiring emergency lighting compliance.\u003c\/p\u003e\n\u003cp\u003eDesigned as a direct replacement for conventional 5ft twin-tube fluorescent battens, the fitting includes rear and end conduit fixing points, a hinged gear tray for tool-free access to the driver, and push-fit loop-in loop-out connectors for single-step installation without additional junction boxes. The opal polycarbonate diffuser spreads light across a 155-degree beam angle, reducing harsh shadows and hotspots on work surfaces. The fitting achieves 154.88lm\/W efficacy and carries an L70B50 rating of 50,000 hours, meaning the LED will maintain at least 70% of its initial lumen output after 50,000 hours of use.\u003c\/p\u003e\n\u003cp\u003eThe pressed steel body is finished in white, with a compact 61mm width and 71mm projection from the mounting surface. The IP20 rating makes the batten suitable for dry indoor environments such as offices, retail back-of-house, plant rooms, and garage workshop areas. The emergency function can be set to maintained (lit continuously), non-maintained (only lit during power failure), or switched mode depending on the installation requirement. The driver operates on 230V 50Hz mains and is rated Class I, requiring earth connection.\u003c\/p\u003e\n\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e1525 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e61 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProjection\u003c\/td\u003e\n\u003ctd\u003e71 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003ePressed steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction 2\u003c\/td\u003e\n\u003ctd\u003e\u0026amp; polycarbonate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClass\u003c\/td\u003e\n\u003ctd\u003eI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIP Rating\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Voltage\u003c\/td\u003e\n\u003ctd\u003e230V 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiffuser\u003c\/td\u003e\n\u003ctd\u003eOpal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmergency\u003c\/td\u003e\n\u003ctd\u003eMaintained \/ Non-maintained \/ Switched\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLamp Technology\u003c\/td\u003e\n\u003ctd\u003eLED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLamp Included\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimmable\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eL70B50\u003c\/td\u003e\n\u003ctd\u003e50000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnergy Rating (Class) post 2021 SLR\u003c\/td\u003e\n\u003ctd\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBeam Angle\u003c\/td\u003e\n\u003ctd\u003e155\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCCT\u003c\/td\u003e\n\u003ctd\u003e4000 K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Colour\u003c\/td\u003e\n\u003ctd\u003eCool White\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLumens\u003c\/td\u003e\n\u003ctd\u003e11200 lm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLumens (Light Source only)\u003c\/td\u003e\n\u003ctd\u003e13050 lm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLumens (Em. mode)\u003c\/td\u003e\n\u003ctd\u003e250 lm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWattage\u003c\/td\u003e\n\u003ctd\u003e83\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficacy\u003c\/td\u003e\n\u003ctd\u003e154.88 lm\/W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCRI\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;85\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDriver Type\u003c\/td\u003e\n\u003ctd\u003eConstant Current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty Information\u003c\/td\u003e\n\u003ctd\u003e(excluding battery)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch5\u003eDownloads\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/products_3953421_datasheet.pdf\" target=\"_blank\"\u003eProduct Specification Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/manual_800048.pdf\" target=\"_self\"\u003eProduct Manual\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the emergency function do?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 3-hour maintained emergency function keeps the batten lit during mains power failure, drawing from an internal battery. The batten can be set to maintained mode (always lit), non-maintained (only lit during power cuts), or switched mode depending on installation requirements. Emergency output is 250lm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this replace a twin-tube fluorescent batten?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The 1525mm length matches standard 5ft fluorescent battens, and the rear and end conduit fixing points align with typical fluorescent batten mounting positions. The push-fit loop-in loop-out connectors allow direct wiring without additional junction boxes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it dimmable?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The integrated LED driver operates at constant current and does not support dimming controls.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat ceiling or wall clearance is needed?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe batten projects 71mm from the mounting surface once installed. Ensure at least 80-100mm clearance between the fitting and any adjacent surface to allow airflow around the driver and prevent overheating.\u003c\/p\u003e","brand":"Knightsbridge","offers":[{"title":"Default Title","offer_id":45293743210763,"sku":"BATS5UHLEM","price":77.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/419302_e83a5ab0-c431-4a68-901e-d5733d9c387f.jpg?v=1714663588","url":"https:\/\/niori.co.uk\/products\/knightsbridge-5ft-83w-led-ultra-high-lumen-batten-with-emergency-4000k","provider":"Niori","version":"1.0","type":"link"}