{"product_id":"braun-casmed-3n600aak-replacement-battery-36v-1500mah-ni-mh","title":"Braun Casmed 3 NI-AA2000MAH Replacement Battery 3.6V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBraun Casmed 3\/N600AAK — 3.6V Ni-MH Replacement Battery (NI-AA2000MAH)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 1500mAh Ni-MH replacement battery for the Braun Casmed 3\/N600AAK medical diagnostic instrument. It replaces OEM part NI-AA2000MAH directly. The cell matches the original voltage and chemistry required by the device's internal charge management circuit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCasmed 3\/N600AAK platform fit:\u003c\/strong\u003e\n    The Casmed 3 series runs a fixed 3.6V rail matched to a single Ni-MH cell configuration. Substituting a different chemistry or voltage — even within a similar footprint — triggers a charge fault because the device's charge IC is calibrated specifically for Ni-MH delta-V detection.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the Casmed 3 charge cycle and confirmed the BMS completed delta-V termination correctly. Charge acceptance on the first cycle was conservative, as expected with a new Ni-MH cell — capacity normalised after one full charge-discharge 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 device to complete its full power-on self-test without interruption. The Casmed 3 runs a BMS verification sequence at startup — cutting power mid-sequence registers as a battery fault that persists until the next clean reboot cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice not completing boot sequence on new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Casmed 3 runs an internal verification check during startup that reads cell voltage and confirms the BMS handshake. A new cell that has partially self-discharged during storage can sit below the minimum threshold required to pass this check — typically around 3.3V for a 3.6V Ni-MH cell. When that happens, the device stalls mid-boot or resets rather than completing startup. Charge the battery fully before the first installation, then allow the device to boot without interruption.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharge indicator not reaching 100% on first charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn the first charge cycle, the Casmed 3 charge IC applies a conservative current limit because it cannot yet profile the cell's internal resistance. This causes the charge indicator to plateau short of full — sometimes as low as 85% — before the IC terminates early. This is not a fault in the battery or the charger. Run one complete charge-discharge cycle and the charge IC recalibrates; subsequent charges reach full capacity reliably.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381439856730,"sku":"BWCS-BRA300MD-1","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381439889498,"sku":"BWCS-BRA300MD-2","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381439922266,"sku":"BWCS-BRA300MD-3","price":46.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BRA300MD-1.webp?v=1778900837","url":"https:\/\/batteryweb.com\/products\/braun-casmed-3n600aak-replacement-battery-36v-1500mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}