“The Clip on and Tag Together Photo voltaic Battery with USB port for your Smartphone.. It allows you to demand your cellular phone or any gizmos speedily as it works on inbuilt Li-Polymer battery similar to the batteries located in cellular phones. It frequently suppliers sunlight to the inbuilt battery when uncovered to sunlight. It then keeps this stored electric power ready to cost your cellular phone or gadgets. his cycle carries on every time it is exposed to sunlight.