but say if you have an electric car that you only use 3 or 4 days a week. can you make an independent system with no fixed battery? ie. if your electric car is not there it charges nothing but the rest of the time it tops your car up?
Yes that is possible with a bit of electronics DIY. Not rocket science. Although anyone who commutes would have their car away at just the peak solar time so I’m not sure how practical it would be.
An interesting idea is integrated solar panels in the cars roof so the car charges itself. Elon has promised that option on the Cybertruck and estimated it could add about 25km per day.
Not a huge amount but it would almost cover all our driving (27km/day average) and how awesome would it be to have a car that you neither have to fill up or plug in?
No desire to buy a cybertruck but I bet we will see this option in other vehicles at some point. Even if it just covers a couple thousand km per year I bet many people would find that very attractive