Battery Choices
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From RollingResistance we know that power required at 95km/h is approximately 11kW. We assume 85% efficiency, and calculate current at 240V, 288V and 324V. We choose 240V because it's a nice round number. 288V is important as any more would require more than 3 relay boards for the Battery Balancer. The desired range is about 50km at 95km/h, which discharges the batteries in 32 minutes.
Voltage | Current | Ah at 30minute rate |
240 | 54 | 27 |
288 | 45 | 22 |
324 | 40 | 20 |
Lithium
I've bought 120 40Ah Thunder Sky LiFePO4 cells. I hope they turn out to be a good investment as Thunder Sky don't have the best reputation.
Thunder Sky are talking about opening a factory in the USA http://www.nabble.com/International-Battery-Inc-t4952860s25542.html. My cells are coming from China.