The large-ticket items also have warranties. You would do well to contact [email protected] and describe the problem you're having with the charger. If you're humble and friendly (i.e. don't accuse them of producing junk in your message; this is not the time for riteous indignation), they'll probably replace it for free. All you'd be out is a few dollars to mail it to them.

How are the ESCs burning out? Which ESC? What are you trying to run? ICS100 ESCs are underrated, but not so underrated that you can get away with running a GWS EPS300C power system on 8 cells for long with one.