The spread of electric cars, that are becoming more and more popular, will be an unstoppable alternative to the future of mobility. However, the main barrier to propagation is still the number of charging stations, and the low range. To eliminate the problems, I designed an accessory solar charging system, that adds extra charge to the batteries, both in parking and during the move, and eliminates self-discharge problems. In my scientific theoretical research, I examined how the range of an electric car is affected, with a designed, universally fitting, solar-powered external charging system, that can be activated anywhere in a sunny day, and gives extra energy to the electric car system without warranty loss. To make the model, I called for the Solar PV database, which is a good point to deliver an ideal performance calculation or energy yield up to day.