The Delta Pro is a great device that you can have ready in your home or basement. Since it does not use gas or propane, there's no worries about breathing in fumes. There are many ways to charge this battery, so you're not left in the dark for too long. You can plug it in the wall (when you have power of course), you can use solar panels, and if you purchase an adapter, you can charge at an electric charging station. I like this so much, that I have two delta pros, two extra batteries, and the dual voltage hub so I can use devices that run 220v, like AC or the stove when the power is out.