Having a cell phone battery replacement is a good idea for people who rely on their cell phone. Keeping an extra charged battery is a wise move. Without a cell phone battery replacement, you risk running out power during an emergency when you will need your phone the most. It is often difficult for travelers to keep their phones charged while they travel. With a simple and cheap cell phone battery replacement, you can eliminate this problem. At one time, batteries could only be purchased from the manufacturer, but now batteries for most phone models are available from wholesale distributors.