Serenity

Battery Capacity:   8 KWH, 160 amp hour, Lithium

Depth of Discharge:   80 percent.  Usable Capacity 6.4 KWH,   Peukert's Exponent:  1.03

3 Knots:  500 Watts  Range:  38 Nautical Miles

4 Knots:  1 KW   Range:  24 Nautical Miles

5 Knots: 2.5 KW   Range:  12.3 Nautical Miles

5.7 Knots: 3.9 KW   Range:  8.7 Nautical Miles

5.9 Knots:  5.2 KW   Range: 6.8 Nautical Miles

Note:    To get a baseline comparison, all measurements are made with no wind, no waves and no tides, with the average taken over two runs in opposite directions.     

Going into weather, range will be less, while going with the weather, range will be more.  

Range is calculated after consideration is given to Peukert's Exponent