Sanho Electronics has announced the HyperMac series of external power packs for Apple's entire MacBook line. Available in four different capacities -- 60Wh, 100Wh, 150Wh and 222Wh -- each device includes a cable for connecting to a MagSafe port. The packs also come with a 5V USB power port for charging any USB device individually, or simultaneously alongside a MacBook. In addition to providing a second mobile power source, the packs can charge an internal battery while providing main power.

Lithium-ion technology is used, allowing the packs to be recharged up to 1,000 times. Although the devices are not scheduled for release until later this month, people can still pre-order the HyperMac units at prices ranging from $200 for the 60Wh model to $500 for 222Wh. A one-year warranty is included.