knightmb
Well-known member
[mod note: split from https://mynissanleaf.com/viewtopic.php?f=17&t=31210&start=230#p610212]
P = V * I so yeah, 1000v x 50 amps = 50,000 watts, the math is right. Doesn't mean you should put that into a Leaf pack, I thought the discussion was about the 800V EV?
This would be the wrong place to discuss that topic.DaveinOlyWA said:knightmb said:An 800V DC fast charger could still charge a 350V, 360V, or 375V battery. Nissan is using 500V to charge their 360V battery with CHAdeMO. How much voltage is actually needed to charge an 800V battery? 1000V?
I thought the limitation on charging was the battery chemistry in terms of power not the voltage? If you feed 1000V @ 50A into any of those batteries, they will all charge at the same rate of 50 kW per second. I understand using higher voltage to reduce the size of wires in the electrical system of the EV for both driving and charging, but how does that exclude the higher voltage charging for the lower voltage batteries?
uhhh...no. You "can't" put a 1000 volts into the LEAF pack no matter what. so 1000 volts @ 50 amps won't get you 50 kw. Might get 19 lw but that's about it. This is the reason that I only rate DC chargers by current.
P = V * I so yeah, 1000v x 50 amps = 50,000 watts, the math is right. Doesn't mean you should put that into a Leaf pack, I thought the discussion was about the 800V EV?