? Warranty 24 months ?: Thank you for your choose the ?Newest Version 25800 mAh?power bank. The power bank is guaranteed for 24 months from the date of purchase.You have the right to replace the product for free, 24 hours customer service online to reply to any questions you have. ?Power bank high capacity?The 25800mAh power bank could charge your phone at least 5-7 times, Suitable for business, travel, going out, you don't have to worry about your phone low battery. [Note:High capacity so the products weight 350g] ?Portable charger with 2-port 3.1A output? The portable charger with 2 USB ports in combination with a 5V / 2.1A and 5V / 1A output will provide your device with fast enough power. ?External battery with protection system? We use a high quality A + polymer lithium battery to extend the life of our products. Built-in security devices protect your devices from excessive power, overheating and overcharging. ?Highly compatible? Suitable for all phones, tablets. (Note: The package comes with a micro USB cable used to charge the power bank and some Android phones. If your phone requires a Lighting cable and a Type C cable, please use your phone cable.)