Profile: Cal-Chip Electronics is a specialist in surface mounted devices. Our universal notebook batteries provide the notebook computer with extra runtime from a single external battery pack. These batteries are lightweight and slim, for maximum portability. They are perfect for an extended period of time, whether it be on an airplane, in a meeting, or on the road. These universal batteries have selectable output voltages and come with a variety of notebook tips, making them compatible with most notebook models. Included is a 5V USB port for recharging the iPod™ / iPhone™. Our titanium external batteries are ultimate in portable power pack technology. With a rating of 66 watts, this external power pack offers uninterrupted power of up to 4 hours or more for most laptops.