{"product_id":"circadiance-smartmonitor-2ps-replacement-battery-74v-5200mah-li-ion","title":"Circadiance SmartMonitor 2PS Replacement Battery 7.4V 5200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCircadiance SmartMonitor 2PS \/ 2PSL — 7.4V Li-ion Replacement Battery (1023384)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 5200mAh (38.48Wh) Li-ion battery for the Circadiance SmartMonitor 2PS and SmartMonitor 2PSL portable sleep monitoring systems. It replaces OEM part number 1023384 directly. The SmartMonitor 2PS is a clinical-grade ambulatory device used for home sleep apnea testing and therapy monitoring.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSmartMonitor 2PS and 2PSL compatibility:\u003c\/strong\u003e\n    Both models run the same 7.4V battery rail and share the 1023384 connector pinout and BMS communication protocol. A single cell replacement covers both 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 SmartMonitor's full charge-discharge sequence and confirmed the BMS handshake completed without a false fault flag. State-of-charge reporting stabilised accurately by the second cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap self-test protocol:\u003c\/strong\u003e\n    After installing this battery, allow the SmartMonitor to complete its power-on self-test without interruption. The device runs a BMS verification routine at startup — cutting power during this sequence triggers a battery fault flag that persists until the next full reboot and will not clear on its own.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSmartMonitor 2PS not completing boot sequence on a new battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe SmartMonitor 2PS runs a BMS learn cycle on first power-up with a new cell. Until that cycle completes, the device cannot confirm the cell's chemistry parameters match its firmware thresholds. If the boot sequence is interrupted — by pressing the power button again or by a low-voltage cutoff mid-test — the device stores a battery fault in non-volatile memory. This clears only after a full uninterrupted charge to 8.4V, followed by a complete power cycle from a cold start.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharge indicator not reaching 100% on the first charge after battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe SmartMonitor's charge IC applies a conservative current ceiling when it detects a new or unrecognised cell — this is normal behaviour, not a fault. The first charge terminates slightly below the full 8.4V endpoint as the IC calibrates to the new cell's internal resistance profile. Run one full charge-discharge cycle and the charge IC will recalibrate its endpoint. After that second charge, the indicator will reach 100% and state-of-charge reporting will track accurately across the session.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381424423002,"sku":"BWCS-CDS200MD-1","price":65.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381424455770,"sku":"BWCS-CDS200MD-2","price":77.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381424488538,"sku":"BWCS-CDS200MD-3","price":86.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CDS200MD-1.webp?v=1778900661","url":"https:\/\/batteryweb.com\/products\/circadiance-smartmonitor-2ps-replacement-battery-74v-5200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}