Palm Treo 650, 700, 700p, 700w, 700wx Lithium Ion Battery 

Extend your talk time with a replacement or spare battery for your Treo™ smartphone. Just keep one resting in your cradle and it's ready whenever you need it. just pop it in your pocket or bag and you're good to go that extra mile at work, chatting with your friends or on the road. Can be recharged while in the phone or using the Cradle Kit. Meets all palmOne and regulatory compliance requirements. Built-in overcharging protection