Savage 25 Brushless

[mbistric]

I finally get my turingy battery and , have EZrun ESC 80A and EZrun motor 2300kv , and that worked for 5 min , savage was flying on rear wheels and stopped . When I turn my esc on he start to light and I dont her beep sound and of course motor is not running , so i think ESC is dead , I try to connect another motor and same thing happens . When I connect battery on ESC I got lot of sparks !!! Is it possible that battery is fried my ESC ? Because earlier I used some cheap batteries and everithing worked .