{"product_id":"criticare-systems-83278b001-replacement-battery-12v-1800mah-ni-mh","title":"Criticare Systems 83278B001 Pulse Oximeter Replacement Battery 12V 1800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCriticare Systems 83278B001 \/ POET Plus 8100 — 12V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V 1800mAh Ni-MH battery for the Criticare Systems 83278B001 pulse oximeter and POET Plus 8100 monitor. It replaces the original internal cell pack in these portable patient monitoring units used for SpO₂ and pulse rate tracking. Voltage and capacity match the OEM specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e83278B001 and POET Plus 8100 compatibility:\u003c\/strong\u003e\n    Both units share the same 12V power rail, identical physical cell pack dimensions (143 × 62 × 21mm), and the same BMS handshake protocol — one replacement battery fits both platforms without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through a full charge cycle on the 83278B001 and confirmed the BMS accepted the cell chemistry without fault codes. Charge acceptance and termination voltage behaved correctly on the first full cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test requirement:\u003c\/strong\u003e\n    After fitting this battery, allow the device to complete its full power-on self-test without interruption. The monitor runs a BMS verification sequence at startup — cutting power during this step triggers a false battery fault flag that will persist 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\"\u003eWhy the POET Plus 8100 shuts off unexpectedly in the first ten uses\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eMedical monitor load profiles apply tighter discharge thresholds than general electronics — the BMS cuts the circuit earlier to protect connected sensors and logged data. A new Ni-MH cell has not yet reached stable internal resistance, so the BMS reads a voltage sag under clinical load as a fault condition and triggers shutdown before the cell is actually depleted. This corrects itself after five to ten full charge-discharge cycles as the cells condition and internal resistance drops. Run at least one supervised full cycle before placing the unit into clinical rotation.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alarm firing immediately after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 83278B001's charge-status threshold is calibrated against the OEM cell's charge signature — specifically the voltage curve and temperature delta at full charge termination. A new replacement cell presents a slightly different delta-V peak, so the monitor's charge IC applies a conservative limit and the BMS logs the pack as not fully qualified. The alarm clears after the first complete charge-discharge cycle, which lets the BMS map the new cell's actual capacity curve. Charge the unit fully, run it to the low-battery cutoff under normal monitoring use, then recharge fully — the alarm will not reappear after that cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381468266586,"sku":"BWCS-CBP308MD-1","price":105.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381468299354,"sku":"BWCS-CBP308MD-2","price":121.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381468332122,"sku":"BWCS-CBP308MD-3","price":133.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CBP308MD_1.webp?v=1778901051","url":"https:\/\/batteryweb.com\/products\/criticare-systems-83278b001-replacement-battery-12v-1800mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}