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211

(post is archived)

[–] • 2 pts

I wonder what isn't being reported about outgassing from charging or overheating Li car batteries. Most other recharable batteries say to charge in a well ventilated area because of heat and fumes except for ev's

[–] • 1 pt

Lithium allegedly does not out gas like lead acid, unless the anode are exposed to moisture. Fast chargers do however, push enough force for thermal run away in damaged cells.

[–] • 1 pt

Utility demand charges are a bitch.

50kVA for a fast charger, I have read. That implies 69kVA source for circuit sizing and generate/transform/rectify efficiency (idk, 90%?) 334A at 208V per car, I guess.

More than 5 MW with all spaces full and 3/4 in charging state. They could not afford to fill the lot on utility power. They would also need a capacitor bank to treat 5MW of reactive load.

EE bros check my estimate.

[–] • 0 pt

That's a good estimate, and that's two houses worth of full load for one car.

[–] • 1 pt

Diesel is the King. Thank you Rudolph.