Features: Battery charging hub, an essential accessory. This efficient charging hub can simultaneously charging up to three flight batteries. Crafted from ABS material, the lightweight yet robust design makes it a great partner. Compact and easy to carry and use. The battery charging hub charges batteries in sequences according to their voltage levels, from highest to lowest. Specifications: Material: ABS Color: Black Size: about 10x8cm/3.94x3.15inch Applicable Model: for tello Product model: G1CH Applicable battery model: GB1-1100Ah 3.8V Working environment temperature: 5-45 °C Input voltage: 5V Input current: 3A (maximum) Charging time (three flight batteries): approximately 2 hours Package Includes: 1x Charging Manager note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.