{"product_id":"panametrics-pt878-flowmeter-replacement-battery-6v-3000mah-ni-mh","title":"Panametrics KR1800SCE Replacement Battery 6V 3000mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePanametrics PT878 \/ Magna-Mike 8500 — 6V Ni-MH Replacement Battery (KR1800SCE)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 6V, 3000mAh Ni-MH pack replaces the KR1800SCE battery in the Panametrics PT878 Flowmeter and Magna-Mike 8500. Both instruments are portable ultrasonic measurement devices used in pipe flow surveys and wall-thickness gauging. Same voltage, same form factor — 112.30 x 45.00 x 22.80mm — no modification needed.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePT878 and Magna-Mike 8500 compatibility:\u003c\/strong\u003e\n    Both instruments run a 6V Ni-MH rail with the same physical bay and connector layout. The BMS on each platform expects the same charge termination signature, so a single cell specification covers both without re-configuration.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge and load cycles on a PT878 unit. The BMS accepted charge termination normally, transducer initialisation did not trip an overcurrent cutoff, and sustained sensor load held voltage within the instrument's operating window.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use calibration cycle:\u003c\/strong\u003e\n    After fitting the new pack, run a full calibration cycle through the PT878 instrument menu before field deployment. The instrument maps battery state during calibration — skipping this step causes premature low-battery warnings during the first measurement session, even with a fully charged pack.\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 PT878 sat unused in a carry case for months\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH packs self-discharge at roughly 1–2% per day at room temperature. A PT878 left in a case for several months can arrive at a voltage low enough that the BMS enters a protection state and refuses a standard charge cycle. The instrument will appear completely dead — no display response, no charge indicator. Recovery requires a slow pre-charge at low current (typically 0.1C) to bring cell voltage above the BMS recovery threshold before normal charging resumes. Most quality chargers with a recovery or conditioning mode handle this automatically — check your charger's manual and use that mode first.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePT878 readings resetting or drifting mid-logging session\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is not a calibration fault — it is a voltage dropout event. Under sustained transducer load during a long logging session, an aged or partially discharged Ni-MH pack can sag below the PT878's minimum operating voltage, causing the processor to reset without fully powering off. The display may flicker or revert to a previous measurement state. A fresh, fully charged pack eliminates the sag; if the symptom persists on a new pack, check that the battery contacts in the bay are clean and making solid contact — target above 5.8V under load at the terminals.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360735527002,"sku":"BWCS-GPT878SL-1","price":48.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360735559770,"sku":"BWCS-GPT878SL-2","price":56.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360735592538,"sku":"BWCS-GPT878SL-3","price":62.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GPT878SL-1.webp?v=1778616209","url":"https:\/\/batteryweb.com\/products\/panametrics-pt878-flowmeter-replacement-battery-6v-3000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}