Just about every time I turn around, there's another new external battery pack for iOS devices that has more storage capacity than the previous capacity leader. Yesterday, accessory manufacturer Satechi came out with the Portable Energy Station, a relatively inexpensive (US$49.95) external battery pack with a huge battery capacity.
Like the $99.95 mophie juice pack powerstation duo, the Portable Energy Station has two USB ports enabling charging of two devices at once. However, Satechi has managed to squeeze 10,000 mAh of power into their device -- 4,000 mAh more than the mophie product.
