{"product_id":"bacharach-eca-450-analyzers-replacement-battery-72v-20000mah-ni-mh","title":"Bacharach ECA 450 Replacement Battery 7.2V 20000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBacharach ECA 450 Analyzers — 7.2V Ni-MH Replacement Battery (0024-0977)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.2V Ni-MH battery rated at 20000mAh (144Wh), built to the same electrical spec as the OEM pack carrying part number 0024-0977. It fits the Bacharach ECA 450 portable combustion and emissions analyzer. The ECA 450 is a field instrument used for measuring combustion efficiency and pollutant levels in heating system surveys.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eECA 450 platform fit:\u003c\/strong\u003e\n    The ECA 450 draws power across a sustained sensor load — combustion probe, electrochemical cells, and display all share the same rail. This pack matches the original voltage and connector arrangement, so the instrument's internal power management recognises it without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through full charge and discharge on the bench, monitoring BMS response at probe initialisation — the point where current draw spikes sharply. The protection circuit held without tripping during repeated sensor power-up sequences.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the ECA 450:\u003c\/strong\u003e\n    After fitting this pack, run a full calibration cycle through the instrument menu before taking it to site. The ECA 450 maps battery state during calibration, and skipping this step causes premature low-battery warnings to appear during your first measurement session even when the pack is fully charged.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS lockout after the ECA 450 sat unused in a carry case for months\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge over time. After several months of storage, the pack voltage can drop below the threshold at which the BMS will respond to a charge command — the charger sees no handshake and does nothing. Apply the charger for at least 30 minutes before concluding the pack is faulty; some chargers need a brief trickle to push the cell voltage back above the recovery threshold, typically around 6.0V for a 7.2V Ni-MH pack. Once voltage recovers into the normal range, the BMS re-engages and a standard charge cycle completes normally.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eVoltage dropout causing readings to reset or drift mid-logging session\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe ECA 450 sustains a continuous load across multiple electrochemical sensors during a logging session. If the cells have degraded or the pack is not fully charged before deployment, internal resistance rises and terminal voltage sags under that sustained draw — enough to trigger a brief undervoltage event that interrupts active measurements. This appears as a sudden reset or drift in logged data rather than a clean shutdown, which makes the battery the last thing technicians suspect. Charge the pack to full before each session and verify the instrument reports a stable voltage reading at the battery status screen before starting a log.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360481247322,"sku":"BWCS-BHA450SL-1","price":284.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360481280090,"sku":"BWCS-BHA450SL-2","price":339.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360481312858,"sku":"BWCS-BHA450SL-3","price":380.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BHA450SL-1.webp?v=1778615882","url":"https:\/\/batteryweb.com\/products\/bacharach-eca-450-analyzers-replacement-battery-72v-20000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}