The EGO Multi Port Charging Case is perfect for charging up to six batteries or as a storage case at home or when in transit. Durable case with wheels and robust handle for easy transport, also includes five durable quick snap latches for easy access & securing of batteries. Will charge any combination of up to six EGO ARC LITHIUM™ batteries at the same time – ideal for professional users. Identifies which battery has the lowest amount of charge, will then power it up until it matches the charge level of the others, and then charge them all simultaneously until full.