Mobile accessories purveyor Mophie has recently unveiled the longest lasting universal battery on the market. This juice pack boasts a whopping 12,000mAh capacity, which should provide an estimated average of eight full charges to a smartphone. In addition, the Powerstation XL is equipped with two USB ports that are capable of charging two devices at the same time. Simply refuel the portable battery via its micro USB port and once all four LED battery capacity indicators light green, you’re good to go. The Powerstation XL retails for $129 USD over at Mophie’s webstore.