{"product_id":"dolphin-medical-2100-pulse-oximeter-replacement-battery-12v-2300mah-sealed-lead-acid","title":"Dolphin medical 2100 Pulse Oximeter Replacement Battery 12V 2300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDolphin medical 2100 Pulse Oximeter — 12V Sealed Lead Acid Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 12V, 2300mAh (27.6Wh) sealed lead-acid battery fits the Dolphin Medical 2100 Pulse Oximeter. The 2100 uses this battery to sustain continuous SpO₂ and heart rate monitoring during patient assessment. It is a direct voltage and chemistry match for the internal battery bay on this unit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDolphin Medical 2100 compatibility:\u003c\/strong\u003e\n    The 2100 Pulse Oximeter uses a 12V sealed lead-acid cell with a specific physical footprint — 178mm × 66.6mm × 35mm. This battery meets that envelope exactly, which matters because the internal bay leaves no clearance for oversized cells and the BMS expects lead-acid charge curves, not lithium.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the 2100's charge cycle and confirmed the BMS accepted the charge profile without triggering a fault. The device completed its power-on self-test and held stable voltage under the oximeter's sensor polling load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle self-test protocol:\u003c\/strong\u003e\n    After fitting this battery, let the 2100 run its full power-on self-test without interruption. Medical-grade BMS firmware on this device runs a voltage verification pass at boot — cutting power mid-sequence writes a battery fault flag 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 2100 alarms low battery immediately after a confirmed full charge\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe 2100's BMS compares resting cell voltage against a stored threshold calibrated to an aged OEM cell. A new lead-acid cell has a slightly different charge acceptance curve for the first several cycles, and the BMS can misread peak voltage as below threshold. Run one complete charge-discharge cycle before using the device clinically. After that cycle, the BMS resets its reference point and the alarm clears.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice will not power on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSealed lead-acid cells self-discharge at roughly 3–5% per month. If this battery was stored for several months before installation, it may have dropped below the 2100's BMS recovery threshold — typically around 10.5V for a 12V lead-acid cell. Connect the device to mains power and leave it charging for a full cycle before attempting to boot on battery alone. If the charger indicator does not respond within 30 minutes, check that terminal voltage is above 10.5V with a multimeter before concluding the cell is faulty.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381387067482,"sku":"BWCS-SHT160MD-1","price":310.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381387100250,"sku":"BWCS-SHT160MD-2","price":370.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381387133018,"sku":"BWCS-SHT160MD-3","price":415.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SHT160MD-1.webp?v=1778900511","url":"https:\/\/batteryweb.com\/products\/dolphin-medical-2100-pulse-oximeter-replacement-battery-12v-2300mah-sealed-lead-acid","provider":"BatteryWeb","version":"1.0","type":"link"}