{"product_id":"marmitek-proguard-control-panel-replacement-battery-72v-2000mah-ni-mh","title":"Marmitek ProGuard 7.2V Ni-MH Replacement Battery 11AAAH6YMX","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMarmitek ProGuard Control Panel — 7.2V Ni-MH Replacement Battery (11AAAH6YMX)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.2V, 2000mAh Ni-MH backup battery for the Marmitek ProGuard alarm control panel. It fits the main panel housing and holds the system live during mains power cuts. OEM part numbers 11AAAH6YMX, GP150AAM6YMX, GP220AAM6YMX, INF-BATPNL, and PG800 all apply to this cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProGuard panel compatibility:\u003c\/strong\u003e\n    The ProGuard control panel uses a six-cell Ni-MH pack at 7.2V nominal to match the panel's internal charging circuit. The BMS expects this voltage profile — a different chemistry or cell count will cause the panel to flag a battery fault immediately on boot.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge acceptance and BMS handshake on the ProGuard panel. The charging circuit drew the expected trickle current, the BMS accepted the new cell without fault codes, and voltage held steady at 7.2V nominal under simulated load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation float charge:\u003c\/strong\u003e\n    Do not run a zone test or full panel diagnostic immediately after fitting this battery. The ProGuard charging circuit needs 24–48 hours of uninterrupted float charge before the cell reaches full capacity. Running a test before that window closes will cause the panel to report low battery — not a fault with the cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the ProGuard panel loses programming during a power outage with a new battery fitted\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA freshly installed Ni-MH pack may not yet hold enough charge to sustain the panel's memory circuits during a mains outage. The ProGuard uses a small but continuous current draw to retain zone programming and user codes. If the new cell hasn't completed its first full float charge, it can drop below the panel's minimum sustain voltage under that load. After restoring mains power, allow the panel a full 48-hour charge cycle before testing backup operation — at that point, the resting voltage should sit above 7.0V.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePanel shows low battery fault immediately after fitting the new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is the most reported complaint after a battery swap on the ProGuard panel, and it's almost always a charge state issue, not a faulty cell. A new Ni-MH pack ships in a partially discharged state — the panel's battery monitor reads resting voltage and flags anything below its threshold. The fix is straightforward: leave the panel powered on mains for 24–48 hours and do not trigger any test mode during that window. Once the float charge cycle completes, the fault should clear automatically with the resting voltage back above 7.0V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309831127130,"sku":"BWCS-MPG800BT-1","price":35.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43309831159898,"sku":"BWCS-MPG800BT-2","price":41.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43309831192666,"sku":"BWCS-MPG800BT-3","price":45.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MPG800BT-1.webp?v=1777868262","url":"https:\/\/batteryweb.com\/products\/marmitek-proguard-control-panel-replacement-battery-72v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}