{"product_id":"lupus-xt1-replacement-battery-72v-2000mah-ni-mh","title":"LUPUS XT1 Alarm System Replacement Battery 7.2V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLUPUS XT1 \/ XT2 Series — 7.2V Ni-MH Replacement Battery (12188)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.2V, 2000mAh Ni-MH cell replaces the backup battery in LUPUS alarm system control panels. It fits the XT1, XT1 12000, XT2 12025, and XT2 Plus panels. Capacity is 14.4Wh — matched to the original specification in the product data.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eXT1 and XT2 panel compatibility:\u003c\/strong\u003e\n    These panels share the same backup battery bay, connector orientation, and float charge circuit. The BMS on each model expects a 7.2V Ni-MH cell — swapping in a different chemistry or voltage triggers a persistent fault code on the panel display.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the XT2 Plus charge controller and monitored BMS handshake. The panel accepted the cell, entered float charge mode, and cleared the low-battery fault within the expected window — no manual reset required.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation charge hold:\u003c\/strong\u003e\n    Do not run a zone diagnostic or siren test immediately after fitting this cell. Allow 24–48 hours on float charge first. The XT panel BMS samples backup voltage before reporting status — testing too early produces a false low-battery alert even on a healthy new cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel losing programming during a power outage after fitting a new battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA freshly installed Ni-MH cell has not yet been accepted by the panel's charge controller. Until the BMS completes its conditioning cycle — typically 48 hours on mains power — the backup voltage is not considered stable enough to sustain panel memory. During a mains outage in that window, the panel draws on an undercharged cell, drops below the memory-hold threshold, and loses its configuration. Let the new cell sit on float charge for a full 48 hours before intentionally cutting mains power or running a backup test.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSiren not sounding on test after backup battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome LUPUS XT panels impose a siren suppression delay of 30–60 seconds on first activation after a battery swap. This is a charge-stabilisation window built into the panel firmware — not a wiring fault or a faulty cell. If the siren fires after a short delay during your test, the battery and panel are functioning correctly. If the siren does not sound at all after 60 seconds, check that the panel lid or battery cover is fully closed, as an open tamper contact will suppress output and log a tamper fault.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309818642522,"sku":"BWCS-NXT120BT-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309818675290,"sku":"BWCS-NXT120BT-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309818708058,"sku":"BWCS-NXT120BT-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NXT120BT-1.webp?v=1777868450","url":"https:\/\/batteryweb.com\/products\/lupus-xt1-replacement-battery-72v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}