This charger is for people who want a battery pack first, but will be out and about long enough to pick up a little sun along the way. The solar panels are great for charging up the battery while on the go and will help make the battery last longer, but they really should not be considered as the primary charging method. This solar charger should be seen as a battery pack, first and foremost. It also has a built-in flashlight and is IP65 water and dust-proof, both of which are nice extras. But the battery pack has a nice faux-leather look on the outside which gives it some style. This is a 25,000mAh power pack that charges via microUSB (which is dated) or by sunlight, which is relatively slow. If you're looking for a high-capacity battery with solar charging, the SOARAISE Solar Power Bank might be the device for you. Number of Ports: 2 | Power Output: 2.8A max USB, 18V DC | Types of Ports: USB-A, DC | Number of Cells: 8 | Efficiency: 22 to 25% | Battery Capacity: N/A The 18-month warranty will give you peace of mind that you can get a charge when you need it. This is a great item to keep in your emergency car kit, or your backpack for camping. You can plug in your phone and your tablet, but you can also scale that up to your laptop with the five included different-sized barrel chargers, and connection for your car battery as well. But if you have larger items that need a charge, the X-DRAGON SunPower Solar Panel Charger is a great choice. There's no water-resistance rating here, so be careful not to get caught out in the rain, and there's no battery included. It opens quite large to collect a lot of sunlight with eight high-efficiency panels, but it folds down small enough to fit into your backpack. Our best overall charger is capable of producing up to 40W of juice from its eight efficient panels.