The most indispensable accessory for your Samsung Galaxy S4 is the battery. Unless you are need of a paper weight even the most advanced phone is useless without power. Use this original Samsung B600BU Battery as a replacement or spare to extend the talk time of your Samsung Galaxy S4. Keep your Samsung Galaxy S4 working at optimum performance levels at all times. Just pop the Samsung B600BU Battery in your pocket or bag and you’re good to go that extra mile, chatting with your friends, at work, or on the road.