{"product_id":"maquet-servo-i-replacement-battery-36v-2700mah-li-socl2","title":"Maquet Servo-i 3.6V Replacement Battery 6194687","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMaquet Servo-i \/ Servo 300 Series — 3.6V Li-SOCl2 Replacement Battery (6194687)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.6V lithium-thionyl chloride cell replaces the backup battery in Maquet Servo-i, Servo-s, Servo 300, and Servo 390 ventilators. It runs the emergency backup and alarm systems during transport or mains power loss. Capacity is 2700mAh (9.72Wh), matching the OEM specification for these platforms.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eServo ventilator platform compatibility:\u003c\/strong\u003e\n    The Servo-i, Servo-s, Servo 300, and Servo 390 share the same backup battery rail, connector format, and BMS handshake protocol — all accept the 6194687 cell without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the Servo platform's BMS verification sequence. The cell passed the low-voltage detection threshold and the charge-state reporting check on first insertion after a conditioning charge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test protocol:\u003c\/strong\u003e\n    After fitting this cell, allow the ventilator to complete its full power-on self-test without interruption. The Servo BMS runs a battery verification routine at startup — cutting power mid-sequence logs a persistent battery fault that only clears on the next complete reboot cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Servo-i battery alarm triggers immediately after a confirmed full charge\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Servo BMS uses chemistry-specific thresholds calibrated to aged OEM cells. A fresh Li-SOCl2 cell has a slightly different open-circuit voltage profile on the first few cycles, which the BMS can misread as a marginal state of charge. The alarm clears once the cell completes one full charge-discharge conditioning cycle and the BMS updates its internal reference. Run the ventilator through that cycle on mains power before placing the unit back in clinical rotation.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eVentilator will not power on after the replacement cell sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-SOCl2 cells self-discharge slowly in storage, and if terminal voltage drops below the Servo BMS recovery threshold, the controller refuses to boot. Measure the cell voltage before installation — anything below 3.2V may fall under the BMS minimum and prevent startup. Place the cell on a compatible charger to bring it back above 3.5V, then re-insert. If the ventilator still does not complete its boot sequence, repeat the charge and attempt a second cold-start.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381419540570,"sku":"BWCS-MSA300BU-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381419573338,"sku":"BWCS-MSA300BU-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381419606106,"sku":"BWCS-MSA300BU-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MSA300BU-1.webp?v=1778900680","url":"https:\/\/batteryweb.com\/products\/maquet-servo-i-replacement-battery-36v-2700mah-li-socl2","provider":"BatteryWeb","version":"1.0","type":"link"}