{"product_id":"simkar-6600012-replacement-battery-48v-1500mah-ni-mh","title":"Simkar 6600012 Emergency Light Replacement Battery 4.8V 1500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSimkar 6600012 — 4.8V Ni-MH Replacement Battery (BL93NC487)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 4.8V, 1500mAh Ni-MH replacement battery for the Simkar 6600012 emergency lighting unit. It slots into the fitting where the original BL93NC487 cell has degraded and can no longer hold sufficient charge to pass a duration test. Voltage, connector, and cell count match the factory specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSimkar 6600012 fitment:\u003c\/strong\u003e\n    The 6600012 runs a 4.8V rail — four NiMH cells in series. The charge controller expects that exact voltage window for float acceptance. A cell outside this range will trigger a fault state or refuse to transition from charge to standby.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the BL93NC487 replacement through a full charge cycle and simulated a mains-fail event. The BMS accepted the load without cutoff, and the fitting transitioned to standby green within the expected window after a conditioning cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst test cycle after installation:\u003c\/strong\u003e\n    Hold the test button for the full rated duration within 24 hours of fitting. This lets the charge controller register the new cell capacity before any scheduled compliance test — skipping it means the controller may flag a fault on its next automated check.\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\n  \u003cp class=\"bpw-desc-p\"\u003eA freshly installed Ni-MH cell does not arrive at full capacity. Storage time means the cell sits at a partial state of charge, and the first charge cycle from the fitting may not fully top it before a test runs. The charge controller on the 6600012 uses a float voltage around 5.4–5.6V to determine readiness, but internal capacity only reaches rated levels after one complete charge-discharge cycle. Run a manual test within 24 hours of installation, then allow a full 24-hour recharge before any compliance duration test.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharge indicator staying red after new battery installation\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen a replacement cell comes off storage at a lower resting voltage, the charge controller can read it as outside the float acceptance window and hold the fault indicator. This is not a wiring fault or a defective cell — it is the controller waiting for the cell voltage to climb into the accepted range. Leave the fitting on mains power for a full charge cycle, typically 24 hours. If the indicator does not shift to green after that, check the cell connector seating and confirm terminal contact is clean and fully engaged.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360381665370,"sku":"BWCS-EMC487LS-1","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360381698138,"sku":"BWCS-EMC487LS-2","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360381730906,"sku":"BWCS-EMC487LS-3","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-EMC487LS-1.webp?v=1778611142","url":"https:\/\/batteryweb.com\/products\/simkar-6600012-replacement-battery-48v-1500mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}