Need help with LED calculations

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msebar

Feeder Fish
MFK Member
Aug 11, 2013
6
1
3
South Florida
Can someone tell me if this correct or incorrect

Star led
3w
700ma
3.8v


4 rows of 6 star led's in series. Each row of 6 is in parallel


Totals
24 x 3w = 72w
4 x .700ma = 2.8a
6 x 3.8v = 22.8v

Reason why I ask is if I take the numbers from the manufacturer amps and watts the voltage is off, same thing if you try the other numbers in the specs. If you use my numers I am way off also. So how do I know what what driver I need. I dont want to spend more then I have to. I also don't want to under buy what I need.
 
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