Spectra Geospatial AC Adapter for Li-Ion Battery Chargers The Spectra Geospatial 67901-09-SPN AC Adapter is a dedicated power supply designed for use with the Spectra dual battery charger system (HQJ27000-TNL) or single slot charger (HQJ50000). It provides stable, reliable AC power to ensure efficient charging performance in both field office and workshop environments. Key Features • Dedicated dual charger power supply for the HQJ27000-TNL or HQJ50000 battery chargers • Stable AC power output for consistent and reliable battery charging performance • Supports efficient battery management , helping keep Li-ion packs fully charged and ready