Typical Forward Voltage: 2.73V White @ 350mA
In my previous reply I should have been more clear..
The math is pretty easy: P = V x I
A 10amp capable battery can put out about 40w, however the power (watts) is more less irrelevant. The current (amps) and voltage are what matters. If the LED requirements are equal to or less than the parameters of the battery then it will work, you'll just need to calculate your resistor values with Ohm's law (V = I x R).
"typical" isn't the value you want, you will be running your LED at the maximum values.