Quickly charges up to 10 WiTalk9X-BP batteries at a time; Color LED displays if battery is charging (Red) or fully charged (Blue); Quick-change design allows you drop in or pull-out batteries fast and easily to get back to work with little downtime; Features female USB-C power input, allowing you to charge batteries with any USB-C Charger you have; Inexpensive WiTalk9X-BP batteries are available (sold separately) to have more power on-hand when you need it