{"product_id":"micro-medical-microlab-2002-spirometer-replacement-battery-72v-1200mah-ni-mh","title":"Micro Medical MicroLab 2002 Replacement Battery 7.2V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMicro Medical MicroLab 2002 Spirometer — 7.2V Ni-MH Replacement Battery (MLA5009)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.2V 1200mAh Ni-MH battery replaces the OEM pack in the Micro Medical MicroLab 2002 Spirometer and compatible pulmonary function testers. It fits the MicroLab 2002, MicroLab 3500 MK4, MicroLab MK4 3000, and MC3500. Capacity matches the original 8.64Wh rating from the product specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMicroLab 2002 and MK4 series compatibility:\u003c\/strong\u003e\n    These models share the same 7.2V cell configuration, connector pinout, and BMS handshake protocol. A single replacement 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 cell through charge and load cycles on the MicroLab platform. The BMS accepted the new pack without fault flags, and the charge IC reached full termination voltage without triggering a premature cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePower-on self-test protocol:\u003c\/strong\u003e\n    After installing this battery, let the MicroLab complete its full startup sequence without interruption. The device runs a BMS verification routine at boot — cutting power mid-sequence stores a false battery fault that persists until the next complete 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 MicroLab 3500 MK4 flags a battery error after a confirmed full charge\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe MicroLab platform uses a BMS that checks cell voltage against a threshold calibrated to aged OEM chemistry. A new Ni-MH cell has a slightly different charge curve during its first few cycles, which can read low to the BMS even when the cell is fully charged. This is not a fault in the replacement pack — it is the BMS learning cycle. Run one complete charge-to-discharge cycle and the threshold recalibrates. The error flag clears once the BMS registers a full cycle with the new cell's voltage profile.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMicroLab not powering on after the battery sat unused in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge over time, and if the pack drops below the BMS recovery threshold — typically around 5.5V for a 7.2V pack — the device will not power on at all. The BMS treats this as a dead or unsafe cell and blocks the power rail. To recover, connect the charger and leave it for a full uninterrupted charge cycle even if the device shows no response initially. Once cell voltage rises above the BMS wake threshold, the device will resume normal startup.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381422948442,"sku":"BWCS-MLA500MD-1","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381422981210,"sku":"BWCS-MLA500MD-2","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381423013978,"sku":"BWCS-MLA500MD-3","price":46.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MLA500MD-1.webp?v=1778900662","url":"https:\/\/batteryweb.com\/products\/micro-medical-microlab-2002-spirometer-replacement-battery-72v-1200mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}