Xvive Audio XVIVE-U5C Battery Charger Case with Three Batteries for U5 Wireless SystemsKey Features Charge and Store Batteries for U5 System Battery Charge Case 3 x Xvive ID799 Rechargeable Batteries The Xvive Audio U5C is a battery charger case with three Xvive ID799 rechargeable lithium ion batteries for U5 wireless transmitters and receivers. The U5C case allows you to recharge up to three Xvive ID799 batteries simultaneously, while protecting them during storage and transport. Use the included three batteries as spares for your U5