Sprint announced today that it is first-to-market with the Energizer Energi To Go portable, battery-driven charger.

This reusable, compact and lightweight charger is powered by one AA battery. It features a single-barrel design made of durable spun aluminum and a control chip that maximizes power transfer from the charger to the phone.

The power demands on a wireless phone have increased as phones have evolved in how they are used. Many wireless phones are Web-enabled, able to send and receive email, take pictures, play music and videos and serve as personal organizers. According to market research group Roper ASW, 20 percent of consumers lose wireless phone power at least once a week.

"Wireless phone users can rely on the Energizer Energi To Go to charge their phones while they are on the go. It fits in the palm of a hand and is perfect for anyone who is mobile. The portable charger provides convenient, reliable power when you can't plug in," said Tony Mazzola, Product Technical Support Manager for Energizer.

The Energizer Energi To Go accessory package is available for $24.99 and includes the reusable charger, three tips and an Energizer e2 Lithium AA battery. The tips include a universal Sprint CDMA connector, a mini-USB and universal iDEN connector, enabling customers to charge a variety of Sprint Nextel phones while on the go.