{"product_id":"carefusion-micro1-spirometer-replacement-battery-24v-2000mah-ni-mh","title":"CareFusion 36-BAT1043 Micro1 Spirometer Replacement Battery 2.4V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCareFusion Micro1 Spirometer — 2.4V Ni-MH Replacement Battery (36-BAT1043)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 2.4V, 2000mAh Ni-MH battery replaces OEM part 36-BAT1043 and OM11861 in the CareFusion Micro1 Spirometer. The Micro1 is a portable pulmonary function testing device used in clinical and home respiratory care settings. Dimensions are 49.50 × 28.40 × 14.50mm — confirm these against your existing cell before fitting.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMicro1 Spirometer platform fit:\u003c\/strong\u003e\n    The Micro1's battery compartment is sized for this exact cell footprint. The device BMS communicates with the cell during startup to verify voltage and chemistry — a mismatched cell dimension or chemistry type triggers a persistent battery fault flag that won't clear without a full reboot.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on the Micro1 platform. The BMS accepted the cell on the first cycle and stepped through its internal self-test sequence without flagging a fault. Capacity matched the rated 2000mAh within normal tolerance by cycle three.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test requirement:\u003c\/strong\u003e\n    After fitting this battery, let the Micro1 complete its full power-on self-test without interruption. The device runs a BMS verification sequence at startup — cutting power during this step stores a false battery fault in memory that persists until the next clean 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 Micro1 Spirometer rejects a new cell during initial BMS handshake\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Micro1's charge IC applies a conservative acceptance threshold on first contact with a new Ni-MH cell. If the resting voltage of the new cell falls outside the expected window — common after extended storage — the BMS flags the cell as faulty before charging even begins. This is not a defective battery. Place the battery in the charger for a minimum of one full uninterrupted charge cycle, then reinsert into the device. The BMS re-evaluates voltage on each power-on, so a fully charged cell at or above 2.4V will clear the rejection flag.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharge indicator stalling below 100% on the first charge cycle\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn the first charge, the Micro1's charge IC limits current delivery to a new Ni-MH cell using a reduced rate until it confirms the cell's internal resistance is within range. This causes the charge indicator to plateau well below 100% and appear to stop progressing. The cell is still charging — the IC is running a conditioning pass. Allow the full charge cycle to complete without interrupting power to the charger. After one complete cycle, the indicator will reach 100% normally on subsequent charges.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381367308378,"sku":"BWCS-BMR100MD-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381367341146,"sku":"BWCS-BMR100MD-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381367373914,"sku":"BWCS-BMR100MD-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BMR100MD_1.webp?v=1778900266","url":"https:\/\/batteryweb.com\/products\/carefusion-micro1-spirometer-replacement-battery-24v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}