{"product_id":"eterna-eb1-replacement-battery-36v-1600mah-ni-cd","title":"Eterna EB1 3.6V Ni-CD Replacement Battery 3SCH1-5L4B 1600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEterna EB1 \/ EML3MISO Series — 3.6V Ni-Cd Replacement Battery (3SCH1-5L4B)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 1600mAh Ni-Cd rechargeable cell that replaces the original battery in Eterna EB1, EML3MISO, EML3NMISO, and EMLED3M emergency lighting units. These fittings rely on this cell to power maintained or non-maintained lamps during a mains failure. Capacity matches the original at 1600mAh (5.76Wh) — no modification to the fitting needed.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEB1 and EML series compatibility:\u003c\/strong\u003e\n    These fittings share the same cell format, voltage rail, and charge controller logic. The 3SCH1-5L4B is the common OEM cell across this range, so the same replacement covers all listed models without wiring or bracket changes.\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 cycle and a simulated mains-failure load test. The BMS accepted charge without flagging a fault, held steady under lamp load, and recovered cleanly after deep discharge — consistent with what Eterna's charge controller expects from a fresh cell.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle conditioning on Ni-Cd cells:\u003c\/strong\u003e\n    Hold the test button for the full rated duration within 24 hours of installation. This forces one complete discharge-under-load cycle and allows the charge controller to register the new cell before your next scheduled compliance test. Skipping this step can cause a false duration failure on first inspection.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\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\"\u003eEterna fittings use a float-charge controller that checks incoming cell voltage before switching to the green \"charged\" state. A new Ni-Cd cell fresh from storage often sits below the float acceptance window — typically under 3.4V — so the controller reads it as a fault rather than a charging cell. Leave the fitting connected to mains for 24 hours. If the indicator stays red beyond that, measure cell voltage at the terminals: it should read above 3.5V once the controller has pushed enough current in. Anything below 3.2V after 24 hours on charge points to a poor connection rather than a faulty cell.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eEmergency light dims and cuts short during a duration test\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new Ni-Cd cell does not always deliver full rated capacity on its first discharge. The cell requires at least one full charge-discharge cycle before the active material in the plates reaches its stated 1600mAh capacity. If the lamp dims earlier than expected during a three-hour test, recharge the fitting fully, then run the test again. A second full cycle almost always brings the cell to rated capacity and resolves the short-duration failure.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360301744218,"sku":"BWCS-ERB100LS-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360301776986,"sku":"BWCS-ERB100LS-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360301809754,"sku":"BWCS-ERB100LS-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ERB100LS_1.webp?v=1778611048","url":"https:\/\/batteryweb.com\/products\/eterna-eb1-replacement-battery-36v-1600mah-ni-cd","provider":"BatteryWeb","version":"1.0","type":"link"}