{"product_id":"saft-804284n-replacement-battery-48v-2000mah-ni-cd","title":"Saft 804284N Emergency Light Replacement Battery 4.8V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSaft 804284N — 4.8V Ni-Cd Replacement Battery for Emergency Lighting\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 4.8V 2000mAh Ni-Cd replacement cell for the Saft 804284N emergency lighting unit. It fits directly into the existing battery compartment and powers the lamp circuit during mains failure. Capacity is 2000mAh (9.6Wh) — taken from the product data, not estimated.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e804284N platform fit:\u003c\/strong\u003e\n    The 804284N uses a fixed 4.8V Ni-Cd cell voltage to match the charge controller's float threshold. Swapping to a different voltage or chemistry trips the controller outside its acceptance window and prevents a full charge cycle from completing.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through a full charge-discharge cycle on the bench. The BMS accepted charge without fault, held voltage under simulated load, and the charge indicator stepped from red to green within the expected window.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst test cycle after installation:\u003c\/strong\u003e\n    Within 24 hours of fitting, hold the test button for the full rated duration. This confirms the new cell accepts load and lets the charge controller register the new cell capacity before your next scheduled compliance inspection.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eEmergency light failing its duration test after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA freshly installed Ni-Cd cell has not yet completed a full conditioning cycle, so its usable capacity at the point of test can be well below the 2000mAh rating. The charge controller tops the cell up in float mode, but float alone does not run the cell through a deep charge-discharge sequence. One manual test cycle — a full load discharge followed by a full recharge — allows the cell plates to reach rated capacity. After that cycle, the fitting should pass a standard duration test at 4.8V under load.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharge indicator staying red after confirmed good installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the cell has been in storage, its resting voltage can drift below the charge controller's float acceptance threshold — typically around 4.6V for a 4.8V Ni-Cd pack. The controller reads this as a fault condition rather than a low cell and holds the fault LED on. Leave the fitting connected to mains for at least 24 hours. The trickle current will raise cell voltage back into the acceptance window, and the indicator should step to green once the controller re-polls the cell voltage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360407584858,"sku":"BWCS-LGR610LS-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360407617626,"sku":"BWCS-LGR610LS-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360407650394,"sku":"BWCS-LGR610LS-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LGR610LS-1.webp?v=1778614613","url":"https:\/\/batteryweb.com\/products\/saft-804284n-replacement-battery-48v-2000mah-ni-cd","provider":"BatteryWeb","version":"1.0","type":"link"}