21CR19/66-9 7.4V 7800mAh Li‑ion Replacement Battery 420-002 for Thermo Scientific Niton XL3t / XL2 XRF Analyzers

Replaces battery model 21CR19/66-9 — a rechargeable Li‑ion pack (7.4V, 7800mAh, model 420-002) designed as a direct replacement for Thermo Scientific Niton XRF analyzers. This replacement battery provides reliable operation at an attractive price as a substitute for original factory units. Compatibility: Works with Niton XL3t series (980 / 800 / 700 / 600 / 700S / 900S / 950) and Niton XL2 series (800 / 980) Thermo Scientific XRF Analyzer models. Charging instructions: Use a charger or charging interface that matches the battery’s charging standard. For the initial charge, a 12‑hour charging period is recommended.