{"product_id":"siemens-sintony-lb350334-replacement-battery-6v-800mah-li-mno2","title":"Siemens Sintony LB350334 6V Replacement Battery 800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSiemens Sintony LB350334 — 6V Li-MnO2 Replacement Battery (BATBL950)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 6V, 800mAh lithium-manganese dioxide cell replaces the backup battery in the Siemens Sintony LB350334 alarm control panel. It fits panels also labelled CESAR. When mains power drops, this cell keeps the panel live so it can still detect zones and transmit alerts.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSintony LB350334 and CESAR panel fit:\u003c\/strong\u003e\n    Both panel variants run the same 6V backup rail with identical connector pitch and BMS handshake logic, so one cell covers both. The BATBL950 cross-references BL950, BL950 E, and MGL0020 — all the same physical cell under different label runs.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a Sintony panel under simulated mains-off conditions. The BMS accepted the cell within the expected voltage window, and the panel cleared its low-battery flag after a full float cycle with no faults logged.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install float period on Sintony panels:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after fitting this cell. The Sintony panel needs 24–48 hours on float charge before its internal voltage monitor will read the cell as full. Running a diagnostic test before that window closes can cause the panel to report a low-battery fault even with a fresh cell installed.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel showing low battery hours after installing new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Sintony LB350334 panel does not read terminal voltage directly at the moment of installation. It monitors the float charge level over time and compares it against a stored threshold. A brand-new Li-MnO2 cell sits slightly below that threshold until it has been on charge for 24–48 hours. If the panel flags low battery within the first day, leave it powered on mains and check again at the 48-hour mark — the fault should clear automatically once the cell reaches full float voltage, typically 6.8V.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm losing panel programming during a power outage after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel loses its zone programming or time settings during a mains failure, the backup cell was not yet accepted by the BMS at the time of the outage. The panel needs the cell to reach a minimum acceptance voltage before it will draw from it under load. This typically requires 48 hours of uninterrupted mains-powered float charging after the new cell is fitted. If an outage happens before that window closes, the panel may fall back to a cold-boot state — refit the cell, restore mains, allow the full 48-hour conditioning cycle, then re-enter panel programming.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309783842906,"sku":"BWCS-SML950BT-1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309783875674,"sku":"BWCS-SML950BT-2","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309783908442,"sku":"BWCS-SML950BT-3","price":51.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SML950BT-1.webp?v=1777868450","url":"https:\/\/batteryweb.com\/products\/siemens-sintony-lb350334-replacement-battery-6v-800mah-li-mno2","provider":"BatteryWeb","version":"1.0","type":"link"}