4-Slot Battery Charger Cradle Kit compatible for zebra ZQ510,ZQ511,ZQ520,ZQ521,ZQ610,ZQ620,ZQ630,QLN220,QLN320,QLN420 barcode Scanner. Suitable use for baggage handlers, postal carriers, retail workers, warehouse employees. CE, FCC Barcode battery Charger Base with 3-Slot,Can Better meet your charging needs. The working status of this Charger station is easy to identify. When charging, it will display a yellow light, and when it is fully charged, it will turn on a green light. Contact us with Any Problem at anytime,we will reply within 24 hours,and we provide Six Month Warranty.