electrical question - guitar pedals - decrease amps?

ok here is what i am trying to do:
i have an external laptop battery that is a 9v @8000ma
i have a couple of guitar pedals that run off of 9v batterries but are only rated at 15ma or so.

my idea is to get rid of the small square batteries inside of each pedal and run a daisy chain out of the external battery to these pedals.

it doesn't seem to work right now though.

is it because there are way too many milliamps going in?
how can i decrease the milliamps?

thanks a ton!

 

The only way I know of would be to put a resistor in the line between the battery and the pedals. The only real consideration would be a way to test to see what ma's the pedals can actually stand, or use a rated resistor that will step it down to what they say they are rated for. If you didn't already know; Radio Shack is a great source for inexpensive resistors and that sort of stuff. Good luck ! Peace and Love !

 

thanks grandpa hippy! how do i test the pedals to see how much they can stand? i have a ohm tester extrodinaire.
next question: i know nothing about resistors....YET.
am in the process of learning. i assume there are different resistors that step it down.
i guess i am asking, how would you go about doing this?
thanks again~

 

Buy battery connectors at radio shack. The red wire will be negative, black positive cause you're using them as a source. Conveniently tie all the blacks together, all the reds together and then tie all the blacks to a fuse. 2A should do. Zip cord can be used to extend the short wires. The reds tie straight back to the negative of the battery.

Remember, 9 volts is 9 volts, the MA rating is the capacity to do work and for how long.

Fully charged, your 8000 MAh battery should last 1 hour on an 8 amp draw, or 2 hours on a 4 a draw or .... see where I'm goin here?

Good luck

BigD