The KDC470 Charging Cradles are uniquely designed to charge your KDC470 and Samsung Galaxy Tab Active2 simultaneously. The KDC470 1-slot Charging Cradle comes with 2 USB Ports to enable charging of multiple other devices and a spot to charge a back-up battery for the KDC470 (2.7V DC, 1130mAh Lithium-Ion). The KDC470 4-slot Charging Cradle is the ideal charging option for a large team equipped with Galaxy Tab Active2s. Charge up to four Samsung Galaxy Tab Active2s and KDC470s at the same time. Set it in the cradle at the end of your shift and both devices will be fully powered for the next one.