The reason you absolutely should buy solar cells now instead of later is because they are still at a very low price and chances are they will go up in the not too distant future. These items are very important for keeping your power up and running, so going out to buy solar cells do more than just gibe your panels what they need to properly work. You actually need them more than any other part of the device because they are basically the very nucleus of them. This is just a tip for those who have thought about getting them, but haven’t made up their minds yet.