My Joysway Wildcat Electric Catamaran looses speed after 1-2 min driving. It slows to aprox. 3/4 of full. The batteries should be in good shape; showing 12,5V+ and each cell: 4,19. Could it be the speed controller or somthing getting (too) hot...??
Any suggestions? I am using 2x 3s 5200mAh in series.
