{"product_id":"omron-m20-replacement-battery-108v-4400mah-li-ion","title":"Omron M20 Blood Pressure Monitor Replacement Battery 10.8V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eOmron M20 \/ M30 \/ P30 \/ Z207 — 10.8V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 10.8V, 4400mAh Li-ion battery fits the Omron M20, M30, P30, and Z207 upper-arm blood pressure monitors. It restores portable operation when the original cell has degraded or failed to hold charge. Voltage and capacity match the OEM specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eM20 \/ M30 \/ P30 \/ Z207 platform fit:\u003c\/strong\u003e\n    These four models share the same battery bay geometry, connector pinout, and 10.8V power rail. The BMS in each device uses the same charge-termination handshake, so one cell SKU covers the full group 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 charge and discharge on a monitored bench. The BMS accepted the cell without fault codes, charge termination triggered correctly at full voltage, and the protection circuit responded to load as expected across multiple cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install self-test protocol:\u003c\/strong\u003e\n    After fitting this battery, allow the monitor to complete its full power-on self-test without interruption. Medical-grade BMS firmware runs a verification pass at startup — cutting power during this sequence triggers a false battery fault that persists until the next clean cold boot.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice not completing boot sequence after battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe M20 and its platform siblings run a BMS learn cycle on first use with a new cell. If the device stalls at the startup screen or resets mid-boot, the charge controller has not yet mapped the new cell's chemistry profile. This is not a faulty battery — it is the device applying OEM thresholds written for an aged cell it no longer has. Run one complete charge-to-full, then discharge through a full measurement session, and the boot sequence will complete normally on the next power cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alarm triggering immediately after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the BMS compares the new cell's resting voltage against a threshold calibrated to the original depleted cell's chemistry signature. A fresh Li-ion cell at 100% charge sits at approximately 12.6V open-circuit, but the device's charge IC may read this as out-of-range on the first cycle. The alarm clears after one full charge-discharge cycle lets the BMS recalibrate its state-of-charge window. Charge fully, run the monitor through normal use until it prompts for charge, then recharge — the alarm will not reappear.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381400338522,"sku":"BWCS-CKP122MD-1","price":176.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381400371290,"sku":"BWCS-CKP122MD-2","price":210.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381400404058,"sku":"BWCS-CKP122MD-3","price":236.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CKP122MD-1.webp?v=1778900536","url":"https:\/\/batteryweb.com\/products\/omron-m20-replacement-battery-108v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}