Hobby-Ace 4IN1 YUNEEC Q500 Parallel Charger Board Extend Multi Battery Rapid Charger Adapter Plate For YUNEEC Q500 Battery charging ONLY Rapid Multi-battery charger plate, can charge 4 batteries at the same time The charger should be worked with the origibal adapter or B6 adapter More quadcopter accseeory products are provided by Hobby-Ace on the Amazon.Bring your eyes into the sky and racing like a free bird, enjoy the ultimate first person view experience.