{"product_id":"classic-120-multi-parameter-monitor-replacement-battery-12v-2300mah-sealed-lead-acid","title":"Classic 120 Monitor Replacement Battery 12V 2300mAh SLA","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eClassic 120 Multi-Parameter Monitor — 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 is the internal backup cell for the Classic 120 multi-parameter monitor. The 120 monitor is a clinical patient monitoring device that tracks heart rate, blood pressure, SpO2, and temperature at the bedside. This battery keeps the monitor and its alarm system operational during mains power interruptions.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eClassic 120 monitor fit:\u003c\/strong\u003e\n    The 120 uses a 12V SLA cell with specific physical dimensions — 178.00 x 66.60 x 35.00mm — to seat correctly in the battery bay. The onboard BMS expects a sealed lead-acid chemistry for its charge profile and cutoff thresholds. Fitting a different chemistry or size will cause charge faults or connector clearance issues.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge, load, and BMS handshake verification. The BMS accepted the cell without fault codes, charge current ramped correctly, and the protection circuit tripped at the expected low-voltage cutoff threshold without nuisance trips during load cycling.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test cycle:\u003c\/strong\u003e\n    After fitting this battery, allow the Classic 120 to complete its full power-on self-test without interruption. The monitor runs a BMS verification routine at startup — cutting power mid-sequence stores a false battery fault that will persist until the next complete 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 Classic 120 alarms low battery immediately after a confirmed full charge\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe 120 monitor's BMS compares cell voltage under load against a threshold calibrated for a conditioned OEM cell. A new SLA cell has not yet completed its formation cycles, so internal resistance is higher than a broken-in cell. Under the monitor's load, voltage sags below the BMS trip point even when the cell is fully charged. Running one complete charge-discharge cycle allows the cell to reach its working capacity and internal resistance drops enough to pass the BMS threshold check reliably.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eClassic 120 will not power on after the replacement cell sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSLA cells self-discharge during storage, and if voltage drops below approximately 10.5V the Classic 120's BMS enters a locked state and will not initiate a standard charge cycle. The cell is not faulty — it needs a recovery charge. Connect the monitor to mains and leave it for a full charge cycle before attempting to power on. If the monitor still does not boot after a full charge, check cell voltage directly at the terminals — it should read above 12.6V before the device will start.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381388345434,"sku":"BWCS-SHT160MD-1","price":310.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381388378202,"sku":"BWCS-SHT160MD-2","price":370.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381388410970,"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\/classic-120-multi-parameter-monitor-replacement-battery-12v-2300mah-sealed-lead-acid","provider":"BatteryWeb","version":"1.0","type":"link"}