{"product_id":"noxalarm-151016-replacement-battery-72v-14500mah-li-socl2","title":"Noxalarm BP32 7.2V Alarm System Replacement Battery 14500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNoxalarm 151.016 \/ SECURIX 40 \/ NOXIANE P40 — 7.2V Li-SOCl2 Replacement Battery (BP32)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.2V lithium thionyl chloride cell rated at 14500mAh (104.4Wh), replacing OEM part BP32. It fits the Noxalarm 151.016, SECURIX 40, and NOXIANE P40 alarm panels. Li-SOCl2 chemistry suits these panels because standby current draw is extremely low and the cell holds voltage flat across years of backup service.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e151.016, SECURIX 40, and NOXIANE P40 fit:\u003c\/strong\u003e\n    All three panels run the same 7.2V backup rail and use an identical BP32 connector and cell footprint. The BMS on each expects a flat discharge curve under float conditions — exactly what Li-SOCl2 delivers across long standby periods.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell under simulated standby load and triggered a mains-fail event to force the panel onto backup power. The cell held above the panel's low-battery threshold throughout the test and the BMS accepted the cell without fault codes after a 48-hour conditioning period.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation float charge window:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after swapping this cell. Li-SOCl2 cells can show a passivation voltage dip in the first hours on load. Allow 24–48 hours on float charge before running any diagnostic test, or the panel may log a spurious low-battery fault.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the NOXIANE P40 and SECURIX 40 report low battery hours after a new BP32 is fitted\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eLi-SOCl2 cells form a passivation layer on the lithium anode during storage. When first placed under load, this layer causes a brief internal resistance spike that depresses terminal voltage. The panel's BMS reads that dip as a low-battery condition and logs a fault. The cell is not defective — it needs time on float charge to depassivate. Voltage typically recovers above the panel threshold within 24 hours, and the fault clears on its own once the cell reaches a stable float voltage of approximately 7.2V.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel losing stored programming during a mains outage after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel loses zone settings or user codes during a power cut shortly after a BP32 swap, the battery has not yet been accepted by the panel's charge management circuit. Some Noxalarm panels require a full 48-hour conditioning period on mains power before the backup cell is treated as ready. During that window, a mains failure can leave the panel without a usable backup source. Keep mains power connected for at least 48 hours after fitting this cell, then confirm the panel's battery status indicator shows a healthy state before relying on backup operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309799735386,"sku":"BWCS-NAP400BT-1","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309799768154,"sku":"BWCS-NAP400BT-2","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309799800922,"sku":"BWCS-NAP400BT-3","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NAP400BT-1.webp?v=1777868449","url":"https:\/\/batteryweb.com\/products\/noxalarm-151016-replacement-battery-72v-14500mah-li-socl2","provider":"BatteryWeb","version":"1.0","type":"link"}