{"product_id":"biocontrol-air-sampler-mas-100-replacement-battery-108v-1800mah-ni-cd","title":"BioControl Air Sampler MAS-100 Replacement Battery 10.8V 1800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBioControl Air Sampler MAS-100 — 10.8V Ni-Cd Replacement Battery (110518-U)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 10.8V, 1800mAh Ni-Cd replacement battery for the BioControl MAS-100 microbial air sampler and compatible MAS-AC-6009 and MAS-AC-7009 units. The MAS-100 is a medical-grade instrument used in pharmaceutical and laboratory environments for airborne particle collection and contamination monitoring. It replaces OEM part number 110518-U and matches the original cell chemistry, voltage, and physical footprint.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMAS-100, MAS-AC-6009, MAS-AC-7009 compatibility:\u003c\/strong\u003e\n    All three models share the same 10.8V battery rail, connector type, and BMS handshake protocol. The pump and collection mechanism draw from the same power circuit, so a single battery specification covers all variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through the MAS-100's full charge and discharge sequence. The BMS accepted the cell, completed voltage verification, and logged no fault codes after one full cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap self-test protocol:\u003c\/strong\u003e\n    After installation, let the device complete its full power-on self-test without interruption. The MAS-100 runs a BMS verification sequence at startup — cutting power during this step logs 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\"\u003eBMS learn cycle on first use in the MAS-100\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe MAS-100's battery management system calibrates its charge thresholds against the actual cell it detects. A new Ni-Cd cell has not yet completed a calibration cycle, so the BMS applies conservative limits on the first charge. This means the device may show a lower-than-expected state of charge until the first full charge-discharge cycle is complete. Run one full cycle before using the sampler in a scheduled monitoring session — after that, the BMS reports accurately.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharge indicator stalled below 100% after first installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn a new Ni-Cd cell, the charge IC in the MAS-100 applies a reduced current limit until it confirms the cell's internal resistance profile. If the indicator stops climbing before 100%, the charge IC has not yet completed its first learning pass. Do not remove the battery — leave it connected and let the charge cycle finish without interruption. Once the first full charge reaches completion, subsequent cycles will reach 100% consistently. Confirm the cell is fully charged by checking for the steady charge-complete indicator rather than the percentage readout alone.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381370781786,"sku":"BWCS-MAS100MD-1","price":81.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381370814554,"sku":"BWCS-MAS100MD-2","price":95.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381370847322,"sku":"BWCS-MAS100MD-3","price":106.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MAS100MD-1.webp?v=1778900448","url":"https:\/\/batteryweb.com\/products\/biocontrol-air-sampler-mas-100-replacement-battery-108v-1800mah-ni-cd","provider":"BatteryWeb","version":"1.0","type":"link"}