What exactly is the problem with the battery itself? You state this is the problem but don't elucidate as to what you think the problem is.
On the second hand market issue. The batteries are falling in price rapidly and once there are enough EV's on the road there will be companies set up to recondition and offer replacement batteries. The market for second hand EV batteries is already HUGE so even if you buy a second hand EV with a reduced range battery you are likely to be able to sell the old battery for a significant proportion of the cost of a new one.