ネイティブが教える英会話のジェムスクール☆Teachers☆

There are many backup batteries around. They've become very popular. They're certainly very useful. I use this one to charge my iPod. I have another one that uses a standard USB port to charge any item that takes five volts. It has been a life-saver sometimes. The pictured battery even has an indication light that displays the battery's charge if I push the button. The best part is that the battery only cost me ¥108. I bought it second hand. It has been great.