RE: charger
If cost is the major problem then you can get a two-stroke generator from Harbor freight for 90-130 dollars depending on current sale price that will get the job done. Of course it is not as attractive, noisier, you need to add the oil to your gas and the output is not as well regulated. On the other hand, it is about as light as a Honda and cheaper to replace than repair. Did I say it was noisy?
At the other end of the price spectrum, the Yamaha EF1000is is comparable to the Honda. Get the one with a better sale price.
Best solution is to join a club with electric power.
John