{"product_id":"niton-xl-2-replacement-battery-74v-7800mah-li-ion","title":"Niton XL-2 420-002 Replacement Battery 7.4V 7800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNiton XL-2 \/ XL3t Series — 7.4V Li-ion Replacement Battery (420-002)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V 7800mAh (57.72Wh) lithium-ion battery for the Niton XL-2, XL2 GOLDD, XL3t, and XL3t GOLDD handheld XRF analyzers. These instruments are used for field-based alloy verification and material composition analysis. The 420-002 part number matches the OEM specification for this battery slot.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eXL-2 and XL3t platform compatibility:\u003c\/strong\u003e\n    These models share the same battery bay dimensions, connector pinout, and BMS handshake protocol. The instrument firmware reads cell state data over the battery communication line — the replacement pack supports that data exchange without triggering an unrecognised-battery alert.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the XRF tube power-on sequence, which pulls a sharp current spike as the X-ray tube initialises. The BMS held the load without tripping into protective cutoff, and voltage recovered cleanly between measurements.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration step:\u003c\/strong\u003e\n    After fitting a new pack, run a full calibration cycle through the instrument menu before taking it into the field. The XL-2 and XL3t map battery state during that calibration pass — skipping it causes the low-battery warning to fire early on 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\"\u003eX-ray tube initialisation current spike tripping BMS on the XL3t\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the XL3t powers up its X-ray tube, the draw spikes sharply for a fraction of a second before settling to the instrument's sustained operating current. A pack with a conservative BMS current threshold can interpret that spike as a fault condition and cut output immediately. This is the most common reason a replacement battery appears dead in the instrument even though it holds voltage on a multimeter. The cell bundle in the 420-002 replacement is rated for that transient load, and the BMS threshold is set above the tube initialisation peak observed in bench testing.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNiton XL-2 not recognising pack after it sat in the carry case for months\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion packs that sit unused will self-discharge below the BMS recovery threshold — typically under 2.5V per cell — and the protection circuit locks out to prevent damage. When that happens, the instrument either shows no battery icon or powers on for a second and immediately shuts off. Plug the pack into the OEM charger and leave it for at least 30 minutes before attempting to power on the analyzer — most chargers detect the low-voltage state and apply a recovery trickle before switching to full charge. If the charger LED stays red and never transitions after 45 minutes, measure pack voltage at the terminals; anything below 5.0V total indicates the BMS has not yet exited lockout and needs a longer trickle phase.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360522502234,"sku":"BWCS-NTL200SL-1","price":308.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360522535002,"sku":"BWCS-NTL200SL-2","price":368.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360522567770,"sku":"BWCS-NTL200SL-3","price":412.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NTL200SL-1.webp?v=1778615946","url":"https:\/\/batteryweb.com\/products\/niton-xl-2-replacement-battery-74v-7800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}