Power Bank 4000 mAh. Solar Charging. USB output.Micro USB input

External solar-powered auxiliary battery with high charging capacity -4.000 mAh-. Made of durable aluminum, with USB output and micro USB cable included. The capacities shown on all our external auxiliary batteries are real, incorporating all grade A and non-recycled batteries, with a useful life of at least 500 charge cycles and in compliance with CE regulations. In addition, they are manufactured in accordance with RoHS standards and comply with the following safety requirements: Power bank overload protection system. Deep discharge protection system that provides greater power bank durability. Locking system to prevent short circuits. Constant load transfer system, in accordance with the capacity of the destination device. 4000 mAh. Solar Charging. USB output.Micro USB Aluminum Input