The Nomad 27M solar panel which utilizes mono-crystalline solar technology has already proven itself to be an extremely convenient and cost effective source of energy. In fact, the Nomad 27M puts out 27 watts and one of the great things about it is that it can be charged during all weather conditions. During clear, sunny spells, a full charge takes approximately four and a half hours. The amount of time required for a full charge does of course depend on the weather, so when it’s partly cloudy, charging takes more or less seven hours, and if the sky is completely over overcast, it may take up to 15 hours. It should also be noted that charging times also vary depending on the type of batteries being used. All in all, when one considers the fact that you’re getting free electricity, waiting for the batteries to charge poses no real problem at all.