Amazon is right now offering the FEELLE Portable 25000mAh Solar Power Bank for $29.91. Without applying any special discount code at the checkout, you save directly $24 on the original price.
With its high-capacity Lithium polymer battery, this charger provides nine charges for the iPhone 8, about eight charges for the Galaxy S6, and at least two charges for the tablet, making it ideal for extended excursions.
Solar energy is captured by four foldable solar panels at a rate nearly similar to that of a standard 5W wall charger. The maximum solar charging speed is 6W solar power and 1A current in direct sunlight.
Equipped with dual smart-identification USB output ports, this charger is capable of charging two digital devices at full speed simultaneously. Ideally suited for travel, camping, and other outdoor activities.
This backup charger is equipped with an integrated circuit that protects against overcharging, over-discharging, overvoltage, and short-circuit. The silicone cover protects the USB ports, making them waterproof, shockproof, and dustproof.