Details: Designed to outperform alkaline batteries Fast charging with a USB-C port on each battery Easy to use included charging cable can charge 4 batteries at once Each Paleblue battery can prevent up to 1,000 single use batteries from being thrown away Includes: 2 Paleblue D Batteries 1 Charging Cable Specifications: Power: 7500mWh Voltage: 1.5V Capacity: 5000mAh Charging Time: 3.5 hours