The Power Bank RAVPower 26800 will help you keep your devices charged when off the grid. You won’t be needing power with its huge battery capacity. At 26800mAh it charges most smartphones over 6 times or a tablet 2 or more times for an average of 9 days of usage per charge. You get power when you need it. It will even charge 3 Devices Simultaneously. It has 3 smart 2. 0 USB ports for a total current output of 5. 5A. It charges in just 14-15 hours with a 2. 4A charger or 30-31 hours with a 1A charger. Never be without power for your devices again.