Power on the Go: Weighing only 11 lbs, it&';s convenient to set up and store with book-sized foldable solar panels All-around Safety: Max safety featuring 52 protective mechanisms, 12 BMS algorithms, and 4 types of physical protection Superior Reliability: FCC/CE, UL 94V-0 flame-retardant, Class 9 impact resistant, and UL certified for 300 Plus Ultra-Fast Charging: Solar charged in only 4 hours Smart App Control: Easy battery management via Wi-Fi or Bluetooth Solar Generator 300 Plus+40W: 3-year warranty + 2-year extended warranty. Solar Saga 100W: 2-year warranty + 1-year extended warranty (automatically applied when purchased from the official website)