Bests & Worsts Reviews from Amazon

The size of this battery is also about the same as the other 30000mAh ones if you don't put the solar panels on top. I have been recommending this to my friends to add this into their earthquake survival kit."The solar panels though are an awesome feature. Granted, they are slow to charge. But, I have confirmed that they work. If you were to find yourself out in the wild without any access to power, these panels would give you probably about 30% of a phone charge for a few hours of direct, intense sunlight