{"product_id":"laerdal-resusci-baby-qcpr-replacement-battery-74v-2600mah-li-ion","title":"Laerdal Resusci Baby QCPR 7.4V Replacement Battery 161-40023","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLaerdal Resusci Baby QCPR — 7.4V Li-ion Replacement Battery (161-40023)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V Li-ion cell is a direct replacement for the Laerdal Resusci Baby QCPR training manikin. At 2600mAh (19.24Wh), it powers the manikin's electronic CPR feedback and sensor systems. It matches the OEM part number 161-40023 and fits the QCPR platform's battery bay and connector.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eResusci Baby QCPR feedback electronics:\u003c\/strong\u003e\n    The QCPR platform runs compression-depth sensors, airway feedback, and wireless data transmission from a single 7.4V supply rail. This cell meets that voltage requirement and carries the BMS handshake the device expects at startup.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the QCPR's power-on self-test sequence and confirmed the BMS passed state-of-charge verification without triggering a false fault. Load draw during active training simulation stayed within the cell's rated discharge envelope throughout testing.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap startup protocol:\u003c\/strong\u003e\n    After installing this battery, let the Resusci Baby QCPR complete its full power-on self-test without interruption. The device's BMS runs a chemistry verification at boot — cutting power mid-sequence writes a battery fault flag 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\"\u003eWhy the Resusci Baby QCPR alarms low battery immediately after a confirmed full charge\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe QCPR's charge IC applies a conservative state-of-charge threshold on first contact with a new cell. The BMS compares internal resistance and open-circuit voltage against a learned baseline from the previous cell — a new cell hasn't established that baseline yet. This mismatch triggers the low-battery flag even when the cell is sitting at full charge. One complete charge-discharge cycle resets the learned baseline and clears the alarm.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eResusci Baby QCPR not powering on after the battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge at roughly 2–3% per month in storage. If the cell voltage drops below approximately 2.5V per cell (5.0V pack), the QCPR's BMS enters deep-discharge lockout and will not allow a normal boot. The fix is a slow pre-charge using a compatible Li-ion charger that supports recovery mode — this trickle-charges the pack back above the 6.0V threshold the BMS needs before it will permit a full charge cycle. Once the pack reads above 6.0V, connect to the standard Laerdal charger and run a full charge before powering the manikin on.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381413183578,"sku":"BWCS-LDR161MD-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381413216346,"sku":"BWCS-LDR161MD-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381413249114,"sku":"BWCS-LDR161MD-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LDR161MD-1.webp?v=1778900598","url":"https:\/\/batteryweb.com\/products\/laerdal-resusci-baby-qcpr-replacement-battery-74v-2600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}