I'm trying to build a quadcopter and i'm having some problems with my turnigy 25A ESC's

When I connect the power they start beeping non stop.

according to the manual, this beep signals Input voltage is abnormal, too high 
or too low and they ask me to check the voltage of the battery pack.

anyone knows what that means, and what I could do to solve the problem?

the battery I have is turnigy nano tech 3.0

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Battery charged?  How many cells?  How many cells can the esc take?  Have a voltmeter to check stuff out?

I have one that is blown, it just twitches when I give my copter throttle. I dont understand why, I have 18a draw from 690kv motor and a 25a speed controller. Hope you found a solution though!

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