{"product_id":"edan-im3s-monitor-replacement-battery-37v-2000mah-li-polymer","title":"Edan iM3s Monitor Replacement Battery 3.7V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEdan iM3s Monitor — 3.7V Li-Polymer Replacement Battery (01.21.064397)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 2000mAh lithium-polymer battery replaces the internal cell in the Edan iM3s patient monitor. The iM3s is a portable clinical vital signs monitor used in hospital wards and point-of-care settings. It tracks heart rate, SpO₂, blood pressure, and other patient parameters — so power continuity matters.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eiM3s platform fit:\u003c\/strong\u003e\n    The iM3s uses a single-cell Li-Polymer pack at 3.7V nominal. The BMS on this monitor negotiates with the cell over a dedicated communication line. Voltage rail, connector pinout, and pack dimensions (49 × 47 × 12mm) all match the OEM specification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the iM3s charge IC and confirmed the BMS handshake completes without a fault flag. Charge termination behaved correctly, and the monitor accepted the cell without throwing a battery-type error.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap startup protocol:\u003c\/strong\u003e\n    After fitting this battery, allow the iM3s to complete its full power-on self-test without interruption. The monitor runs a BMS verification sequence at boot. Cutting power during that sequence locks in 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 iM3s charges slowly or stops short of 100% on the first cycle\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe iM3s charge IC applies a conservative current limit when it first encounters a new cell. It treats an unknown capacity state as a safety condition and throttles the charge rate until internal resistance data is logged. This is normal behaviour on the first charge, not a fault. Run one complete charge-to-full cycle and the IC recalibrates — subsequent charges reach 100% at normal speed.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eiM3s showing low-battery alarm immediately after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe BMS compares cell voltage against a threshold calibrated for the OEM cell chemistry. A new replacement cell that hasn't completed a full charge-discharge cycle may read slightly below that threshold at rest, triggering the alarm even at full charge. This is a BMS learn-cycle issue, not a defective cell. Run one complete charge-discharge cycle on the iM3s before clinical use — the BMS recalibrates its cutoff reference and the alarm clears. Do not place the device in clinical service until that cycle is complete and the alarm does not recur.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381354299482,"sku":"BWCS-EDM320MD-1","price":103.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381354332250,"sku":"BWCS-EDM320MD-2","price":123.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381354365018,"sku":"BWCS-EDM320MD-3","price":137.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-EDM320MD_1.webp?v=1778900175","url":"https:\/\/batteryweb.com\/products\/edan-im3s-monitor-replacement-battery-37v-2000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}