Replacement Battery 21CR19/66-9 (420-002) for Thermo Scientific Niton XL3t 900S XRF Analyzer — 7.4V 7800mAh

High-capacity rechargeable Li-ion replacement battery 21CR19/66-9 (420-002) — 7.4V 7800mAh — designed as a cost-effective swap for worn OEM packs while restoring reliable operation. This rechargeable Li-ion pack delivers strong performance and value for Thermo Scientific handheld XRF units. Compatible models: Niton XL2 800/ 980 Thermo Scientific XRF Analyzer; Niton XL3t 980/ 800/ 700/ 600/ 700S/ 900S/ 950 Thermo Scientific XRF Analyzer. Replaces battery model: 21CR19/66-9. Important: use the proper charger or charging interface specified for this battery type. For best results, a 12 hours initial charge is recommended.