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If the ferry uses 150-200 kWh/day, that's two Tesla batteries assuming no recharging during the day (so realistically, you could run it on one, since the ferry
by tgsovlerkhgsel 4y ago
If the ferry uses 150-200 kWh/day, that's two Tesla batteries assuming no recharging during the day (so realistically, you could run it on one, since the ferry presumably isn't constantly moving).
Of course, the fixed cable avoids having to replace the battery every couple years, might be lighter/cheaper etc. - but it could absolutely be implemented using batteries.
(This assumes the numbers are accurate, the 100 liters of fuel vs. only needing 200 kWh seems odd.)
- sharkster711 4y agoIt would increase the weight of the boat though, by quite a bit so you'd end up needing a bigger battery. The battery also does not have 100% efficiency so add in another 10% for losses. You'd also need downtime to charge that battery up - about 15-20 hours if you use level 2 charging. Yes, 200 kwh seems oddly low.
- mrb 4y agoHave you seen the massive size of that drum of electric cable on the boat? It weights definitely more than 1200 lb, which is the weight of a Tesla 100 kWh battery. So the boat would be actually more lightweight after replacing that drum with a battery.