{"product_id":"nihon-kohden-cu-172-replacement-battery-108v-2500mah-li-ion","title":"Nihon Kohden CU-172 Replacement Battery 10.8V SB-970P","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNihon Kohden CU-172 \/ CSM-1701 \/ CSM-1702 — 10.8V Li-ion Replacement Battery (SB-970P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 10.8V 2500mAh (27Wh) lithium-ion battery replaces the SB-970P and X162B cells in the Nihon Kohden CU-172 defibrillator and CSM-1701\/CSM-1702 patient monitors. All three units share the same voltage rail, connector, and BMS handshake protocol, so one cell fits the platform. Capacity figures are taken from product data — 2500mAh at 10.8V nominal.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCU-172 and CSM-170x platform compatibility:\u003c\/strong\u003e\n    The CU-172 defibrillator and both CSM monitor variants draw from the same 10.8V Li-ion architecture. Nihon Kohden standardised the connector pinout and BMS communication across this platform, so the battery seats and negotiates correctly in all three units without adapter hardware.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the CU-172 charge and discharge sequence. The BMS accepted the cell, completed charge termination at the correct voltage, and passed the unit's internal self-test without throwing a fault code.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap power-on sequence:\u003c\/strong\u003e\n    After installing this battery, let the device complete its full power-on self-test without interruption. The CU-172 runs a BMS verification routine at startup — cutting power mid-sequence causes a false battery fault 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\"\u003eCU-172 not completing boot sequence on a new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe CU-172 runs a hardware self-test during every boot, and that sequence includes a battery load check. A new cell that hasn't completed its first full charge-discharge cycle may sit just below the BMS's minimum pass threshold for that test. The unit interprets this as a fault and halts the boot. Run one complete charge-discharge cycle on the unit before putting it into service — this lets the BMS calibrate its state-of-charge model against the actual cell chemistry and clears the boot fault.\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 has not yet learned the capacity curve of the new cell. The charge IC can report 100% while the BMS's state-of-charge algorithm still flags uncertainty — and the CU-172 defaults to a low battery alarm rather than risking a false-ready state in a clinical environment. The fix is a full charge to termination, followed by a full discharge under normal device operation, then a second full charge. After that cycle the BMS has enough data to report capacity accurately and the alarm clears.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381411315802,"sku":"BWCS-NKS170MD-1","price":223.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381411348570,"sku":"BWCS-NKS170MD-2","price":267.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381411381338,"sku":"BWCS-NKS170MD-3","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NKS170MD-1.webp?v=1778900625","url":"https:\/\/batteryweb.com\/products\/nihon-kohden-cu-172-replacement-battery-108v-2500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}