I keep a 110v charger in my car for emergencies (especially since my car can charge others in a pinch), but it wasn't that hard to install a 220 in my garage (of course Texas is a bit more lax when it comes to doing that kind of work without a license, though I was pretty meticulous about following code). I didn't buy a super expensive charger, and the most expensive part was the Romex (it was when copper was pricier), and overall it cost me about the price of a basic gas grill.