Renault Zoe charging time and efficiency

Renault Zoe charging time
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4 years ago

R90 3x6A, 3x7A…3x10A efficiencies would be interesting.

1x32A and 3 x 16A seems to have same percentage in the chart, so could i assume efficiency to benefit from 3~ with 3x power even with lower amperages.
Maximizing solar use in equation.

3 years ago
Reply to  voimavirta

My Zoe won’t charge at less than 3x14A.

A R90 with CCS (the 41 kWh pack should be able to charge at 82 kW) would be a no-brainer.
It’s a shame the 41 kWh pack was not released along with CCS.

4 years ago

Nice comparision!
I heard so many horror stories about ZOEs: cracking dashboard, charge interrupts, forced sleep mode, motor trouble, charging noise, shutting down of charging stations. (Unthinkable in my trouble free C-Zero!)
I still like the conti power train better, but I think one has to worry less in an R90.

Living in a rural area, CEE16 3ph sockets with 11kw but no RCB are at every house (for the log splitter?) A 3ph ICCB like the NRGkick would be perfect, but I built an EVSE with parts from (highly recommended).

4 years ago

I dont care about that
No one will charge 41 kWh with 10A 1-Phase
Takes too much time for both versions ๐Ÿ˜‰

And beginning from 11 kW – effiency is the same or no big issue at all.
And therefore, 43 kW capability is much more important to me, than higher efficiency when talking about Schuko speed ๐Ÿ˜‰

That’s why i bought Zoe Q90 in october ๐Ÿ™‚

3 years ago
Reply to  Stefan Ko

I guess that “no one” is me then ๐Ÿ˜‰ I charge with 10A 1-Phase at work ๐Ÿ™‚ Yesterday during work i charged from 10% to 50% before i left for home. Today when i arrived at work i had 26% left estimating i will end up with around 60% when i leave work today. So i do not have to charge at home actually ๐Ÿ™‚

Eivind Hafslund
1 year ago
Reply to  Stefan Ko

I donโ€™t see anywhere any measurement of energy consumed from the grid? How are you able to calculate efficiency when you donโ€™t know the energy consumption from grid? The data with higher efficiency on higher powers seem to me strange. But that the different charging powers have different actual current draw, and control algorithms based on voltage drops etc could explain the big differences.

filip bjurling
4 years ago

I still think the 43kW charging option is such an advantage i would choose that option if it was available in sweden. I would then install a red three phase plugg and buy a charging cable with that connection. I could then bring the cable with me for use at other red plugg outlets. Schuko is not good to use anyway

Eduardo Francisco
4 years ago

I would go for R90 and 7.4kW charger (1×32 A). Mainly because I would prefer to have single-phase at home, since it is generally cheaper than 3-phase.

4 years ago

I use the NRGkick for CEE 16 or 32 red plug. 3 Phase 22 kW – perfect.
But one point is true:
New ZOE 41 kWh more range is only important at the first full charge (or each full charge).
Because if you go to recharge the car at a 43 kW charger – both -> the old 43 kW ZOE and the new one are at the same speed at all – so the time for driving and recharging would nearly be the same (and therefore there is no difference between them on a longer trip).

That is why the 41 kWh ZOE would have been great if he got already CCS 80 kW or so ๐Ÿ™

4 years ago

I bought Zoe ZE40 R90, and my charger is 1x32A. I regularly charge from 75% of the battery capacity during the night (1 a.m. to 7 a.m.), when electricity is cheaper in Spain.

Regarding electric consumption efficiency, after driving my Zoe and connecting it to the plug for a later programmed charging, the car start AC in order to refrigerate the batteries. It can easily consume 1 KWh in this process as I deduct by my hourly electricity consumption. In summer this can be worst.

3 years ago

This is a common misconception.

Renault advertises the Zoe to charge at 11 kW, 22 kW, etc, while they should say 11 kVA, 22 kVA.

What is true is that cos phi is rather low, especially at lower charging rates. This however has nothing to do with efficiency. Charging effectiveness, yes that declines, but efficiency, no.

I measured charging efficiency of my Zoe by comparing the power as reported by the power meter in my charger circuit and usage as reported by the on-board computer. Charging mostly at 11 kW, lifetime roundtrip efficiency was 87% (Roundrip = charger + battery).

Another data point: The power meter installed in the charger circuit would always display a power of 8.8 kW when I was charging at 11 kVA (falsely advertised by Renault as 11 kW). This 2.2 kVA difference is NOT LOSSES. It is reactive power. Learn about reactive power and the difference between kVA and kW and youโ€™ll understand.

So, sleep well, your Zoe isnโ€™t stealing your money ๐Ÿ˜‰

Daniel U
2 years ago

arne-nl have a point but is only partly right.
Some of the potential charging effect can not be utilized due to fase lag/reactive effect.
The power meter only messures the Active effect so you do not have to pay for reactive losses.
However, there is a substantial loss of active effekt in the charger at lower amps.
This is because the inverter is optimized for higher current (ie 32A)
The charging effeciency can simply be calculated from number of kWh delivered to the battery (You can get that from CanZE-app + OBD device) devided with number of kWh reported in the power meter in charger Circuit.
At lower current (<10A) the efficiancy droppes under 70%

8 months ago

It’s not a problem of efficiency, but a problem of power factor. The charger has a low power factor at low power. This means that there is no that much waste of active power as you say.