{"product_id":"sebac-bird-ventilator-fabian-replacement-battery-132v-4500mah-ni-mh","title":"SEBAC BIRD Fabian Ventilator Replacement Battery 13.2V 4500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSEBAC BIRD Fabian Ventilator — 13.2V Ni-MH 4500mAh Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 13.2V Ni-MH battery (4500mAh \/ 59.4Wh) is a direct replacement for the Vyaire Fabian portable intensive care ventilator. The Fabian is used in hospital wards and patient transport settings where uninterrupted ventilation support is critical. This cell matches the original voltage rail and connector footprint for the Fabian platform.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFabian ventilator platform compatibility:\u003c\/strong\u003e\n    The Fabian's internal BMS is calibrated to a 13.2V Ni-MH chemistry. Substituting a different voltage or chemistry causes the BMS to reject the pack entirely. This replacement matches both the voltage rail and the charge termination profile the Fabian expects.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through charge and discharge under the Fabian's typical load profile. The BMS accepted the pack without fault codes, completed its self-test sequence, and held voltage within spec across the full discharge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap startup requirement:\u003c\/strong\u003e\n    After installing this battery, allow the Fabian to complete its full power-on self-test without interruption. The device runs BMS verification at startup — cutting power during this sequence triggers a false battery fault that persists until the next clean reboot.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Fabian flags a battery fault after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Fabian's BMS uses a learned capacity threshold to judge whether the installed pack is serviceable. A new Ni-MH cell starts with slightly lower effective capacity on its first cycle — the cell chemistry hasn't reached full activation yet. The BMS compares the measured charge against its stored threshold and can flag a fault even when the pack is genuinely full. One complete charge-discharge cycle allows the BMS to recalibrate its threshold to the new cell's actual capacity, clearing the fault.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFabian fails to complete boot sequence after battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge during storage at roughly 20–30% per month. If the pack voltage drops below the Fabian's BMS recovery threshold — typically around 10.8V for a 13.2V pack — the device won't draw enough current to complete its boot sequence and may appear completely dead. Connect the battery to its charger for a minimum of 4 hours before reinserting it. Once voltage returns above the BMS floor, the Fabian boots normally and completes its self-test.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381461155930,"sku":"BWCS-AVS110MD-1","price":106.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381461188698,"sku":"BWCS-AVS110MD-2","price":122.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381461221466,"sku":"BWCS-AVS110MD-3","price":134.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AVS110MD-1.webp?v=1778900983","url":"https:\/\/batteryweb.com\/products\/sebac-bird-ventilator-fabian-replacement-battery-132v-4500mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}