{"product_id":"casmed-740-replacement-battery-72v-3800mah-ni-mh","title":"Casmed 740 Replacement Battery 7.2V 3800mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCasmed 740 \/ 750 \/ 940X Series — 7.2V Ni-MH Replacement Battery (03-08-0450-I)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.2V, 3800mAh Ni-MH replacement battery for the Casmed Model 740, 750, and 940X patient monitoring devices. It cross-references OEM part numbers 03-08-0450-I, 03-08-0450, 6036, and 120336. Voltage and capacity match the original cell specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e740, 750, and 940X compatibility:\u003c\/strong\u003e\n    These models share the same 7.2V battery rail, connector footprint, and BMS handshake protocol. One cell pack covers the full platform 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 charge, hold, and discharge on a Casmed 740 unit. The BMS accepted the cell, completed its verification sequence, and reported state-of-charge correctly through full discharge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap startup protocol:\u003c\/strong\u003e\n    After installing this battery, allow the device to complete its full power-on self-test without interruption. The Casmed 740 runs BMS verification at every startup — cutting power during this window triggers 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\"\u003eCharge indicator not reaching 100% on the first charge cycle\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Casmed 740 charge controller applies a conservative current limit when it detects a new or recently stored Ni-MH cell. This is intentional — the charge IC reads internal resistance higher than a conditioned cell and caps the termination threshold accordingly. The battery is not defective. Run one full charge-to-discharge cycle and the controller recalibrates its end-of-charge detection, after which the indicator reaches 100% correctly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice will not power on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge during storage — a pack sitting for several months can drop below the Casmed 740's BMS recovery threshold, typically around 5.5V for a 7.2V pack. At that voltage the BMS locks out power delivery as a protection measure and the device shows no response on the power button. Connect the device to mains charging for a minimum of 30 minutes before attempting to power on — the charger applies a trickle recovery current that brings the cell voltage above the BMS unlock threshold before switching to full charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381491564634,"sku":"BWCS-CMS740MD-1","price":54.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381491597402,"sku":"BWCS-CMS740MD-2","price":64.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381491630170,"sku":"BWCS-CMS740MD-3","price":71.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CMS740MD-1.webp?v=1778901249","url":"https:\/\/batteryweb.com\/products\/casmed-740-replacement-battery-72v-3800mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}