FMinMI
Member
Thought you could get 50kW with the CHAdeMO...If you want a 35kW adapter get the chademo one
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Thought you could get 50kW with the CHAdeMO...If you want a 35kW adapter get the chademo one
Thought you could get 50kW with the CHAdeMO...
OK. But I would have thought that at a low SOC, it would be faster, then ramp down as the SOC goes up. So you are saying that if I start at 20%, it will be 35kW, but as it goes up, it will stay at 45kW, all the way to 100%? Doesn't seem right. Ironically, I bought one over a year ago used. Never had a chance to test it yet...But you can't really get that. 50kW is the maximum you can possibly get. At a low SOC the voltage is too low to get that and you might start out at 35kW, and as the SOC increases the charge rate eventually will increase to ~45kW.
Sweet. I am all ears for your findings...Well. I decided to be a guinea pig. I just got a shipping notification - should be arriving Monday from Hong Kong. We’ll see how this goes!
Well. I decided to be a guinea pig. I just got a shipping notification - should be arriving Monday from Hong Kong. We’ll see how this goes!
OK. But I would have thought that at a low SOC, it would be faster, then ramp down as the SOC goes up. So you are saying that if I start at 20%, it will be 35kW, but as it goes up, it will stay at 45kW, all the way to 100%? Doesn't seem right. Ironically, I bought one over a year ago used. Never had a chance to test it yet...
OK. But I would have thought that at a low SOC, it would be faster, then ramp down as the SOC goes up. So you are saying that if I start at 20%, it will be 35kW, but as it goes up, it will stay at 45kW, all the way to 100%? Doesn't seem right. Ironically, I bought one over a year ago used. Never had a chance to test it yet...
Ours peaks out at around 48 KW. But yah. Haven’t seen 50.
The CHAdeMO adapter is limited to 125A, but most CHAdeMO sites are limited to ~100A. So you speed is your voltage(SOC) * Amps. So at 350v the most you can get is 35kW. That increase slowly until it peaks at ~40kW @ ~60%, but will still taper toward the top just like Supercharging.
If you have a 350v battery (old 60s/70s/75s, or the special 85 pack) it would be even slower.
Then you must have the good CHAdeMO sites that support the full 125A that the adapter does.
Power available via CHAdeMO charging is limited by the max Amps (100A or 125A). As a result, the charging curve is totally different from what people experience at superchargers. Charging power in kW is roughly volts*amps, and the charging voltage is dictated by your car's pack voltage, which is low when the battery is empty and high when the battery is full. Charging a Tesla via CHAdeMO, you'll get a higher charging rate the higher your SOC is up to the point where you start hitting the taper imposed by the battery management system. Functionally, if you start charging at 20%, you might get 30-35kW which will gradually rise--as the battery fills up and therefore pack voltage increases--to ~45kW by the time your battery is at 85-90%. After that point, it will taper off just like supercharger as your battery gets totally full.OK. But I would have thought that at a low SOC, it would be faster, then ramp down as the SOC goes up. So you are saying that if I start at 20%, it will be 35kW, but as it goes up, it will stay at 45kW, all the way to 100%? Doesn't seem right. Ironically, I bought one over a year ago used. Never had a chance to test it yet...
The charger matches the voltage to the battery pack voltage. It's putting out 100 or 125 amps the whole time up until the taper, but the voltage it is delivering is rising as the pack voltage rises--they're matched. Then it's simply V*A=kW. Once the battery hits the taper, even though the voltage continues to rise as the battery cells fill up even more, the delivered amperage decreases and does so faster than the voltage rises. As a result, the power goes down.I have observed this behavior and find it curious.
You are saying that at 350v when I pull into the charger I am able to put 100 amps into the car and so it charges at 35kW?
Is the charger only putting out 350v? Wouldn't they be trying to charge the car at 400v? If the car is being fed 400v@100 amps I would be getting 40kW the entire time the car is charging until the BMS taper.
But when I pull into a CHAdeMO charger I typically charge at less than 150mph that slowly rises to 200+MPH before the BMS taper at ~85%
I just don't understand the math behind the slow rise, what is causing the speed of the charge to change as the battery fills?
Ummm, well, it doesn't stay the same at Superchargers either. You've seen this, right? At Superchargers, it starts off really high and then only goes down.But why doesn't the MPH you are charging at stay the same as it does on a Supercharger?
But you can't really get that. 50kW is the maximum you can possibly get. At a low SOC the voltage is too low to get that and you might start out at 35kW, and as the SOC increases the charge rate eventually will increase to ~45kW.
Sweet. I am all ears for your findings...
Was it $660 shipped all-inclusive? Or are there custom charges as well?