{"product_id":"cqr-multibox-sirens-replacement-battery-6v-330mah-ni-mh","title":"CQR Multibox Siren BAT6V-0.33A 6V 330mAh Ni-MH Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCQR Multibox Sirens — 6V Ni-MH Replacement Battery (BAT6V-0.33A)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 6V 330mAh Ni-MH rechargeable battery for CQR Multibox sirens. It slots into the siren housing as a backup power cell, keeping the siren active during mains power failure. Voltage and capacity match the OEM spec exactly — 6V, 330mAh (1.98Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMultibox siren compatibility:\u003c\/strong\u003e\n    CQR Multibox sirens use a dedicated backup cell on a float-charge circuit. The panel trickle-charges this cell continuously so the siren stays live during a power cut. This battery sits on that same circuit and accepts the float voltage without issue.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a float-charge test rig at 6V and confirmed the BMS accepted the charge cycle without false low-battery flags. Charge acceptance was consistent across the full conditioning period.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFloat charge conditioning after installation:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after fitting this cell. Allow 24–48 hours on float charge first. Testing before the cell is fully conditioned will cause the panel to report a low battery fault even though the battery itself is fine.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy your alarm panel still shows low battery after fitting a new cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eCQR Multibox panels read battery state through a voltage threshold on the float-charge circuit. A brand-new Ni-MH cell sits below that threshold until it completes an initial charge cycle. The panel interprets this as a depleted battery and holds the low battery warning. Leave the panel powered and on mains for 24–48 hours — the warning clears once the cell voltage climbs above the panel's acceptance threshold, typically around 7.2V across the cell pair at rest.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSiren silent on test after backup battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome Multibox siren units apply a short inhibit window after a battery swap to allow charge stabilisation before arming the backup circuit. If you trigger a test within 30–60 seconds of installing the cell, the siren may not respond. This is a circuit-level hold, not a wiring fault. Wait at least 60 seconds after installing and closing the cover, then re-test — the siren should fire normally on the next trigger.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309824639066,"sku":"BWCS-CRT603VT-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309824671834,"sku":"BWCS-CRT603VT-2","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309824704602,"sku":"BWCS-CRT603VT-3","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CRT603VT-1.webp?v=1777868106","url":"https:\/\/batteryweb.com\/products\/cqr-multibox-sirens-replacement-battery-6v-330mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}