Includes 20.8W backpack folding rugged solar panel and 6AH lithium Ion battery pack with built in state of charge LED indicator and low voltage protection. Overcurrent, overcharge and undervoltage battery disconnect. Built in a waterproof Pelican Case enclosure. Ultralightweight. This is the lightest-weight solar power solution and is intended for serious expedition and EMS/Fire/military applications where weight and full features are critical. Low self discharge rate on the shelf and high power density batteries. Maximum input current 5A. Excellent thermal tolerance (-45 to 70+C). We can custom design and configure custom solar charged lithium power systems. Call us.