The battery I will be using is 8.4V and supplys 700mAh current.
The leds I plan to power has a foward voltage of 3.2 and forward current of 30 mAh each.
So far i know that in a parallel circuit, voltage is constant and current splits....so does this mean I have to hook up 23 leds in parallel so each led gets around 30mAh without resistors?
The voltage is what drives the current. Hook up 3 LED's in series for 3.2x3 = 9.6V. They will be a little dim, but still fairly efficient. Put lots of these circuits in parallel across the battery for as much light as you want.
You could also put 2 LED's in series in each circuit, with a dropping resistor to get exactly 3.2V on each LED. But, battery voltage varies with temperature, state of charge, and load, so an active voltage regulator would be cool to maintain exactly the right voltage.
I would go for the 3 in series. If you can't live with the [lack of] brightness, you could also try putting the 2 LED's in series across the battery. They may have enough margin to be OK, but you might significantly shorten their life. Give it a try!
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