1.Rechargeable Methods: This LED camping lantern has a built-in rechargeable battery and solar panel. It can be charged not only via regular USB chrging cable but also by reliable solar when you are out of power supply. It provides the option of using windup power for weather related emergencies such as tornadoeshurricanes and extreme snow storms.2. Power Bank with USB Charger: This camping lanern can be a power bank to boost a dead phone, keeping you safe and in touch. The USB Port allows you to charge your android mobile phone or other android USB devices in emergency situations.