Promate 20000mAh Solar Power Bank is the Best choice for Camping and night due to its extreme Torch Light. The Power Bank can charge any device and Windows and iOS devices. LED light indicators help us to ensure how much power remaining. Other Features include a protection software that prevent short circuit, over-charging, and over-discharging which keeps our device safe. Due to variety weather changes you may charge your power bank and use solar energy for emergency.