Originally Posted by
RazorRC
RC discharger says you need to use 10awg charging cables when doing 40A, so I'd try to get something in that gauge. This one only does 30A in recycle mode, but probably not a bad idea anyway.
This charger looks cool, but I've been doing 40A with my iCharger, so kinda hard to justify going back to 30A. Glad they included a recycle function though!
You can use 14g up to 4ft. I have noticed that the RC world loves to go overkill on their wire sizing.