I need a SUV for work, but feel guilty about the gas mileage. Thinking about buying a used Land Rover and converting it myself. I've seen on the Internet that I can do this for around $300.
My concern is if this is true, how can I get more miles than just 150-200, is there portable chargers I can take with me and how long does it take to charge and how much $ do they cost, what about solar power chargers that I can slip in the windshield like a sunscreen, what if I want more power so I can go over 60mph, and do you think it is true that someone that has not ever fixed anything electric before can do this (120 pound female)?
I'm not afraid to take this challenge on and have a mechanic to pull the engine out.
Am I being realistic? Oh, and can the batteries go on top of the roof if reinforced and in a locked metal box to store them in? ;) I want to do this right and show it off without the guys laughing at me. They are laughing at just the suggestion of it now.
No, what you're proposing isn't realistic. Not even close.
Can you convert a Land Rover to electric for only $300? I don't know of anyone who's done an EV conversion for less than $600, though there's always the first, and it just might be you. There's only two ways I can think of to do it: if you get a lot of electric car component donations, like motor, controller, charger, batteries...
...or if you find a used electric forklift and break it down, selling the excess parts so that the net expense for you is only $300.
If you go this route, you'll be doing some welding, a lot of borrowing of special tools, and even more waiting while one thing or another gets sold off.
You'll be doing well to get 50 miles on a charge, let alone 150-200. If you get lithium batteries you'll get more than 50 miles, but that's not going to happen for $300.
You don't want to store batteries on the roof, because they're heavy. You want your center of balance to be as low as possible, to reduce the risk of rollover accidents. I've heard of people jacking up their vehicles and putting battery boxes underneath, which seems like a pretty good idea to me!
Yes, you can get an onboard charger for your EV. That's a good idea.
The solar panel idea? I've never heard of one that fits in the front window, but that seems like a pretty good idea if you could find one light enough to roll out and pick up when you wanted to drive. In general, I'm not bullish on movable solar panels, because they work best when they're perfectly positioned to collect maximum sunshine.
My suggestion is to keep that enthusiasm, because you absolutely CAN do it. And then read a reputable electric conversion guide, like "Build Your Own Electric Vehicle" or "Convert It!", and see what you can do.