Button cell internal resistance generally large and can not be charged. This has determined that its current short-circuit is not large, they typically 0.5A is considered a very good condition. There is a button cell battery similar, and short-circuit current of more than 1A (must be a prerequisite for a new battery), which is used in some motherboard of the computer, three button batteries in series (separable in 3), which is Ni-Cr battery pack. Price of 5 yuan or more.
        As you said short-circuit current of 8A battery, the volume is very low. Button cells should not be, but other cells are still in play, such as my ultra-compact MP3 inside the lithium coin battery is only so thick, a single button cell of about 1.5 times the width, if the demolition of a small circuit inside, giving a current of short circuit is certainly more thanrechargeable laptop battery  8A. Price about 40 yuan.
        There is also a cylindrical lithium battery type (cell No. 5 in diameter with a height of 5 cells in 1 / 3), and short-circuit current of over 8A. I do not remember the specific model. Price about 30 yuan.
That’s all I know the size of a small short-circuit current of a large battery, I do not know his friend needed to use such a cell what to do if we really want to short-circuit current about 8A, but is also a button battery, this battery-upscale national I’m afraid not, yes, the price should be able to get the hundred dollars.apple a1079 battery