2016` Wh Capacity Long-lasting Li Fe P04 Battery with More Than 3, 500 Cycles Maximum 2500W Charging Power Fully Charged in 0.8 Hour (AC + Solar) 1000W Max Solar Charge Fully Charged in 2 Hours 5 Ways to Charge (AC/ Solar/ Auto/ Generator/ Dual AC+ Solar) 2500W Pure Sine Wave AC Alternating Current (4000W peak) 13 Versatile Sockets for 99% of Devices 15ms Connection to the Power Grid for 24/7 UPS Smart App Control (Wi Fi & Bluetooth Connection) Parallel Interface for Expansion Battery**