Qi-infinity8482; High Capacity Extral Pro USB Powerbanks Mac (26000mAh) This product comes with a 12 month replacement warranty. Primarily for Apple products (Macbook series, iPad, iPhone) and includes latest Magsafe T connector. It can also charge some laptops (IBM, Lenovo, HP), please refer to product images for which adapters are included. Highly efficient (15% more than our previous models) battery pack with increased voltage (24V max) and current (6.6 A). No expense spared as it is built with expensive and highest quality grade A Panasonic cells, premium IC/PCB, Aluminum unibody with greater than 600 recharge cycles over the life of the battery. Charges MacBook Pro 13-inch ~1.5 times, MacBook Pro 15-inch ~1.2 times, MacBook Pro 17-inch ~0.8 times; MacBook Air 11-inch ~ 2.2 times, MacBook Air 13-inch ~ 1.8 times; iPad Mini 1 ~ 3.5 times; iPhone ~ 10 times. Charge HP Compaq laptops ~1.5 times; IBM Lenovo laptops ~1.5 times (with standard capacity battery); Samsung Galaxy S4 ~ 6 times. Qi-infinity technology enables full speed laptop DC port (up to 4.5A, 90W) and USB port charge (up to 2.1A) and universal compatibility. Fast charging for multiple devices simultaneously with the 6.6A total output. Broadly compatible with both USB charging port and a DC Output laptop port, charge a wider range of tech devices. Note: The Powerhouse series (26,000 and 60,000 mAh) has different adapters and connectors which are not compatible with Powergrid (34,200 mAh) or PowerPlant (52,800 mAh). Please do not use this with Surface Pro as we do not have adapter for this model.