The most indispensable accessory for your Motorola cellular device is the battery. Unless you are need of a paper weight, even the most advanced phone is useless without power. Use this original Motorola AANN4285B Battery as a replacement or spare to extend the talk time of your Motorola cell phone. Keep your phone working at optimum performance levels at all times. Just pop it in your pocket or bag and you're good to go that extra mile, chatting with your friends, at work, or on the road.