{"product_id":"hellige-marquette-md-2500-replacement-battery-84v-8000mah-ni-mh","title":"Hellige Marquette MD 2500 Replacement Battery 8.4V 8000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHellige Marquette MD 2500 — 8.4V Ni-MH Replacement Battery (2023852-029)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 8.4V, 8000mAh Ni-MH battery fits the Hellige Marquette MD 2500 and Monitor Dash 2500 cardiac monitors. It replaces OEM part numbers 2023852-029 and 2023227-001. Voltage and capacity match the original specification to maintain normal device operation in transport and acute care environments.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMarquette MD 2500 and Dash 2500 compatibility:\u003c\/strong\u003e\n    Both monitors share the same battery bay geometry, connector pinout, and BMS handshake protocol — the same cell pack satisfies both platforms without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge and discharge cycles on the MD 2500 platform. The BMS accepted the cell chemistry, completed self-test without flagging a battery fault, and held voltage within the monitor's operating window across the full discharge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test protocol:\u003c\/strong\u003e\n    After fitting this battery, allow the MD 2500 to complete its full power-on self-test cycle without interruption. Cutting power during the BMS verification sequence causes a latched battery fault that does not clear until the next complete 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 MD 2500 alarms low battery immediately after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe MD 2500 BMS applies a chemistry-calibrated threshold during self-test. A new Ni-MH cell has not yet established the internal resistance profile the BMS uses to validate state-of-charge. The monitor reads the cell as below threshold and triggers the alarm even when the pack is at full voltage. One complete charge-discharge cycle trains the BMS to the new cell and clears the alarm on subsequent boots.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice will not power on after battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge during storage. If a pack drops below the MD 2500's BMS recovery threshold — typically around 7.0V for an 8.4V nominal pack — the monitor will not boot even when the charger is connected. Place the battery on the charger for a minimum of 30 minutes before attempting to power the device. If the charge indicator does not respond within that window, remove and reseat the battery to allow the charge IC to re-initiate the recovery charge cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381503066202,"sku":"BWCS-GME250MD-1","price":99.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381503098970,"sku":"BWCS-GME250MD-2","price":116.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381503131738,"sku":"BWCS-GME250MD-3","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GME250MD-1.webp?v=1778901306","url":"https:\/\/batteryweb.com\/products\/hellige-marquette-md-2500-replacement-battery-84v-8000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}