Solar charger series products, own the patent of the intellectual voltage regulation technology, can modulate different output voltage and current. It can charge up all kinds of brand handsets or USB interface digital products under sunshine directly, and also can charge up the devices mentioned above without sunshine through releasing electric energy stored in it. It is convenient for you to take with when you are out on business trip, travel, on a long-distance bus or ship, in the fieldwork etc. It is an ideal, safe, portable, environmental-friendly, lightweight, flexible, durable and versatile charging product.