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Amp Minutes......are the most convenient units for battery capacity.

Let's say you require a battery to give an average current of 17 Amps for 10 minutes. That's a capacity of 170 Amp Minutes. Allowing for losses, a 180 Amp Minute pack should be OK.

You've never heard of a 180 Amp Minute pack? You have now!

 

3000mAh = 180AM
2400mAh = 144AM
2000mAh = 120AM
1700mAh = 102AM
1300mAh =  78AM
1000mAh =  60AM
  800mAh =  48AM
  500mAh =  30AM
  300mAh =  18AM
  110mAh =  6.6AM
   50mAh =   3AM
    1mAh =  .06AM