{"product_id":"hitachi-x-met8000-schlau-replacement-battery-72v-6200mah-li-ion","title":"Hitachi ND2037FD31 X-MET8000 Replacement Battery 7.2V 6200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHitachi X-MET8000 Series — 7.2V Li-ion Replacement Battery (ND2037FD31)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.2V 6200mAh Li-ion replacement battery for the Hitachi X-MET8000 portable XRF analyser. It fits the X-MET8000 schlau, optimal, Optimum Geo, and experte variants. The OEM part number is ND2037FD31, and capacity matches the original pack at 44.64Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eX-MET8000 variant compatibility:\u003c\/strong\u003e\n    The schlau, optimal, Optimum Geo, and experte models share the same battery bay geometry, connector pinout, and BMS handshake protocol. One pack fits all four without adapter or modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through the X-MET8000 initialisation sequence, including detector module power-up and source excitation cycles. The BMS held stable through the inrush current at detector startup without triggering an overcurrent cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use calibration cycle:\u003c\/strong\u003e\n    After installing, run a full calibration cycle through the instrument menu before field deployment. The X-MET8000 maps battery state during calibration — skipping this step causes premature low-battery warnings on the first measurement session in the field.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eX-MET8000 shutting down mid-measurement during active XRF excitation\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe X-ray tube and detector in the X-MET8000 draw a combined surge current at the start of each excitation pulse. On a degraded original battery, internal resistance rises enough that this pulse causes a voltage sag past the BMS cutoff threshold — the instrument reads it as a fault and powers down. A fresh cell with lower internal resistance holds the voltage rail steady through the pulse. If shutdowns persist after fitting a new pack, check that the battery contacts in the bay are clean and making full contact, as a resistive joint at the connector produces the same sag.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eX-MET8000 not recognising a new pack after the analyser sat unused for months\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge during storage. If a pack drops below approximately 2.5V per cell, the BMS enters a protective sleep state and the instrument cannot wake it through normal power-on. To recover, connect the battery to its charger and leave it for up to 30 minutes before attempting to power the analyser. Most chargers apply a low-rate pre-charge trickle at this stage to bring the cells back above the 2.7V per cell recovery threshold before switching to full charge current.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360454344794,"sku":"BWCS-HMT800SL-1","price":193.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360454377562,"sku":"BWCS-HMT800SL-2","price":231.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360454410330,"sku":"BWCS-HMT800SL-3","price":259.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HMT800SL-1.webp?v=1778615883","url":"https:\/\/batteryweb.com\/products\/hitachi-x-met8000-schlau-replacement-battery-72v-6200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}