{"product_id":"nonin-avant-2120-nibp-monitor-replacement-battery-72v-3600mah-ni-mh","title":"Nonin Avant 2120 NIBP Replacement Battery 7.2V 3600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNonin Avant 2120 NIBP Monitor — 7.2V Ni-MH Replacement Battery (4032-001)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.2V, 3600mAh Ni-MH battery replaces OEM part 4032-001 in the Nonin Avant 2120 NIBP Monitor and compatible Avant-series pulse oximeters. It restores full battery-backed operation to devices used for automated non-invasive blood pressure measurement in clinical environments. Voltage, capacity, and connector match the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAvant 2120 and Avant 9600\/9700 compatibility:\u003c\/strong\u003e\n    These Avant-series devices share the same 7.2V battery bay, connector pinout, and BMS handshake protocol. A single cell SKU covers the NIBP monitor and both pulse oximeter variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the Avant 2120 charge-discharge routine. The BMS accepted the cell on first insertion, completed the charge sequence without fault flags, and held stable voltage through repeated load cycles matching the device's pump-motor draw profile.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap self-test protocol:\u003c\/strong\u003e\n    After installing this battery, allow the Avant 2120 to complete its full power-on self-test without interruption. The device runs a BMS verification sequence at boot — cutting power during this window writes a battery fault to memory 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\"\u003eLow battery alarm triggered immediately after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Avant 2120's BMS applies a chemistry-calibrated threshold to determine battery state. A new Ni-MH cell hasn't established its full charge-acceptance curve yet, so the BMS may read internal resistance as higher than expected and flag a low battery condition even when the cell is fully charged. This clears after one complete charge-discharge cycle. Run the device on battery until it shuts down under load, then charge to 100% — the BMS recalibrates its threshold against the actual cell profile on the next cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAvant 2120 will not power on after battery was stored in the device\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge at roughly 1–2% per day when idle. A battery left in storage for several weeks can drop below 5.0V — the BMS recovery floor for this device. Below that threshold, the BMS locks out to prevent cell damage and the device shows no response on the power button. Connect to mains power first and allow the charger circuit to bring the cell above 5.4V before attempting to power on. The device typically regains boot capability within 15–20 minutes on charge from a deeply discharged state.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381474820186,"sku":"BWCS-NAT212MD-1","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381474852954,"sku":"BWCS-NAT212MD-2","price":60.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381474885722,"sku":"BWCS-NAT212MD-3","price":66.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NAT212MD-1.webp?v=1778901067","url":"https:\/\/batteryweb.com\/products\/nonin-avant-2120-nibp-monitor-replacement-battery-72v-3600mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}