{"product_id":"otis-2000-replacement-battery-6v-2000mah-ni-cd","title":"OTIS FFA718B1 Emergency Light Replacement Battery 6V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eOTIS 2000 \/ Emergency Power Supply ECU 2 — 6V Ni-CD Replacement Battery (FFA718B1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 6V, 2000mAh nickel-cadmium replacement cell for the OTIS 2000 emergency lighting unit and Emergency Power Supply ECU 2. It fits fittings that reference OEM part numbers FFA718B1 and FFA718B1-W. This battery maintains backup illumination in elevator cabs and emergency exit routes during mains failure.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOTIS 2000 and ECU 2 compatibility:\u003c\/strong\u003e\n    Both units share the same 6V NiCd cell format, connector pitch, and float charge voltage. Either fitting accepts this cell without modification to the charge circuit.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through a full mains-fail simulation. The charge controller accepted the cell, completed its trickle charge phase, and the fitting advanced to green status within the expected window. BMS cutoff did not trigger during load.\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. NiCd cells shipped from storage carry a partial charge. Running one complete test cycle lets the charge controller register actual cell capacity before the 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\n  \u003cp class=\"bpw-desc-p\"\u003eA freshly installed NiCd cell does not arrive at full capacity. Storage self-discharge and the absence of a conditioning cycle both reduce available energy on the first test. The fitting's charge controller needs one complete charge-discharge cycle to measure actual cell capacity. Run a full manual test within 24 hours of installation, allow the fitting to recharge completely, then re-test — duration performance improves substantially on the second cycle.\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\"\u003eThe charge controller in these fittings uses float voltage to determine cell state. A cell that has been in storage long enough may present a terminal voltage outside the controller's acceptance window, causing the fault LED to hold even when the cell is physically sound. Leave the fitting connected to mains for 12–24 hours — the trickle charge will bring cell voltage into the float acceptance band and the indicator should advance to green. If the fault LED persists beyond 24 hours, measure cell voltage directly; a healthy NiCd cell at float should read at or above 6.0V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360308199514,"sku":"BWCS-OTS200LS-1","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360308232282,"sku":"BWCS-OTS200LS-2","price":75.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360308265050,"sku":"BWCS-OTS200LS-3","price":83.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OTS200LS-1.webp?v=1778611108","url":"https:\/\/batteryweb.com\/products\/otis-2000-replacement-battery-6v-2000mah-ni-cd","provider":"BatteryWeb","version":"1.0","type":"link"}