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Rapid Charging

707 Views 23 Replies 8 Participants Last post by  MX30_NL, 
kevancroft.kc





So now the temp is 20Deg C Rapid starts at around 35 Kwh then drops off and remains steady at around 22Kwh.
What do you think?
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MX30_NL
I think the car is rubbish.. .. I just checked this graph from FASTNED. Check the text below : ambient should be 30C to achieve this level of charging.. 🤷🏻‍♂️

So this car should only be sold in the tropics !!


So I combined the graph from FASTNED (30C), with your data set in a graph below. The drop in charging speed is horrific at 22 C.. 😱

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Aen
So, the car is rubbish because your expectation exceeds the specs of the car that was sold to you? I believe we are talking about a MY2021. Mazda advertised a fast charging time from 20 to 80% of 36 minutes at an ambient temperature of 25C. When I do a rough calculation based on the data in the pictures I end up with a total charging time of 38 minutes to get from 20 to 80% at an ambient temperature of 22C. A meire 2 minutes difference and that makes a car rubbish and only to be sold in the tropics? You could have made a comment as well that FastNed uses old data For the MX30. The MX30 MY2022 charges at 50kW DC. Maybe time for FastNed to update their data?
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MX30_NL
@ Aen . I have a 2021 Advantage. I don't know of you are aware of the discussions on the forum about charging at low temperatures ? There is a hack to switch the
heating of the battery, since it only starts heating by design at - 7C. My son uses the car to go to Amsterdam. That is about 100km away.

To get home again in winter ( range at 120kmph is about 130km in winter), he needs to charge. Just to get the battery to a level to be able to get home again
( so topping up 70km ), so he has 10km to spare, takes a whopping 80 minutes, with ambient at + 10 C...

The graph from fastned is made at 30 C ambient. I didn't notice this when I bought the MX-30. With my present knowledge I wouldn't have touched the MX-30
with a barge pole even..
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Aen
@MX30_NL I am but this post is about an ambient temperature of 20C. Also hate it when people call this wonderful car ‘rubbish’ ;)
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MX30_NL
@Aen I understand your feelings. The car is OK if you charge at home over night and almost never go further then 75km from your home.

That is why I bought it. In the mean time my dad passed away and I visit my mother (83 yrs) every friday. I have to stop to recharge the MX 30 2x on that return trip.
Too much time lost than way. And my mother doesn't live next to a highway fastcharger also. Otherwise I could park it there and visit mum in the mean time..
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seasidebaz
The issue for me is that the charge curve used to be much better - around 25kW at 15C. But since the update AM036A it doesn’t reach anywhere near that anymore and will charge at around 9-12kW at 15C. So yes, the poor charging curve now makes this car bad for going any kind of distance.
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jump_man


My range on a fully charged battery.
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MX30_NL
That is possible, if you drive 60kmph almost all the time. But in the real world, we drive here 120-125kmph. Then the range is about 135km... :rolleyes:
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jump_man

On the highway, I drive on cruise control at a speed of 90 km and my consumption drops dramatically, sometimes up to 10.5 kW per 100 km. In the city, I drive at a speed of 70-80 km and my consumption increases to 13.4 kW per 100 km
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MX30_NL
I tried it out when we first had the car. Drive on cruise control, exactly 80 kmph (85 on the speedometer): you loose 1 km range for every km driven..
When you drive 50 kmph ( 56 on the speedometer), you loose 0,8 km range per km driven. When you do 100 kmph ( 108 on speedometer) you loose
1,2 km range per km driven. At 130 kmph ( 138 km on speedometer), you loose 1.6 km per kilometer driven...

Of course these were stretches of around 5 km each. Not as accurate as 100 km on the highway. But that is not possible here : too much traffic..
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Figgeman
kevancroft.kc said:
View attachment 943
View attachment 945
View attachment 944
View attachment 946
View attachment 942
So now the temp is 20Deg C Rapid starts at around 35 Kwh then drops off and remains steady at around 22Kwh.
What do you think?
Click to expand...
Today I charged at 50kW for 26 minutes, and my average charging speed was 35kW. Air temperature: +18.
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MX30_NL
Figgeman said:
Today I charged at 50kW for 26 minutes, and my average charging speed was 35kW. Air temperature: +18.
Click to expand...
Tomorrow I go for a trip of about 270km. Driving at 110kmph (real), range will be around 170km. So I need to charge 100km, around 60%. I'll do two sessions.
From around 20%-70% and later from 10% to around 20-40%, depending on range needed. I'll take photo's like you did.

These will be Tesla chargers I hope..
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MX30_NL
As promised.
Charging from 34-95% in 39 mins, ambient 20C . Tesla fastcharger.

So I managed to do the full trip with only a single charging session. As predicted I needed 60%, but in a different range. I arrived home with 9 km range left.
While driving it seemed I'd end up with 2 km range left, but the last 8km is really low speed, and I almost lost no range at all there ( slightly downhill also).

I added the "minutes" in the screenshots - bottom- as the timestamp from the phone is really small and unreadable almost, but I wanted all shots in one image.

Do not take the timestamp absolute, sometimes I made an instant screenshot, others I was a bit late to notice I needed to make one (again..).
So " 8 min" could be "8.45 min" and "39 min" is "39.01 min" .. Not really scientifically sound, but its a first timer for me.. 🤠
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kopaszkrapek
MX30_NL said:
As promised.
Charging from 34-95% in 39 mins, ambient 20C . Tesla fastcharger.

So I managed to do the full trip with only a single charging session. As predicted I needed 60%, but in a different range. I arrived home with 9 km range left.
While driving it seemed I'd end up with 2 km range left, but the last 8km is really low speed, and I almost lost no range at all there ( slightly downhill also).

I added the "minutes" in the screenshots - bottom- as the timestamp from the phone is really small and unreadable almost, but I wanted all shots in one image.

Do not take the timestamp absolute, sometimes I made an instant screenshot, others I was a bit late to notice I needed to make one (again..).
So " 8 min" could be "8.45 min" and "39 min" is "39.01 min" .. Not really scientifically sound, but its a first timer for me.. 🤠



View attachment 958
Click to expand...
Agree, with warm battery ( indicated temperature above half ) on LIDL 22 kW DC, managed to maintain 20kW charging speed at 90%. Also nowadays with temperature above 25C, and warm battery on 50 DC charger, 37kW maintaned util 80%. Yesterday a 15-80% took 32 min on DC.
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MX30_NL
The issue with most Tesla chargers is : for the MX-30 the location of the post is wrong and cables are to short to charge while parking in the same space.

So I wondered; how about an extension cable. The car comes with a 240V home-charger, and a CCS2 'extension' cable..

Question is : can that cable handle the "36kW" charging I had the other day.

Or will it just melt..

The cable I have for the Range Rover says 20A / 250V = 5 kWh... .. a long way from 36kW.

Any thoughts ?


Of course the best solution would be if Tesla would provide each post with two cables, with the capacity to charge two cars simultaneously..

Then it doesn't matter where the cable goes and where one parks to charge.. " .. Hey Elon.. ..listen up.. "
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seasidebaz
It’s not a CCS2 extension cable, it’s a standard type 2 cable for non-tethered charge points. I’m pretty sure nobody sells CCS extension cables as they would be too dangerous, especially if they’ve got upwards of 300A running through them…
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MX30_NL
seasidebaz said:
It’s not a CCS2 extension cable, it’s a standard type 2 cable for non-tethered charge points. I’m pretty sure nobody sells CCS extension cables as they would be too dangerous, especially if they’ve got upwards of 300A running through them…
Click to expand...
.well, then Tesla should just arrage the post in such a way both sides of a car can be reached, like central in the space..
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seasidebaz
Or maybe there should be a standard in where to put the charger socket? Maybe everyone should have followed tesla’s lead as the trailblazers? Ps the charge socket should always be on the near side or centralised - Mazda messed up with that one
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MX30_NL
seasidebaz said:
Or maybe there should be a standard in where to put the charger socket? Maybe everyone should have followed tesla’s lead as the trailblazers? Ps the charge socket should always be on the near side or centralised - Mazda messed up with that one
Click to expand...
I quite like the solution on my Range Rover P400e hybrid : smack-right-on-the-nose.. .. suits any charger location.. :cool:
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