drbrake
Posts: 23
Joined: Thu Dec 05, 2019 6:13 pm
Delivery Date: 06 Dec 2019
Leaf Number: 311237

How can I tell how many amps my Nissan Leaf 2017 is receiving at a charger?

Sun Oct 04, 2020 11:23 am

Would I need to install Leaf Spy or something?

What us the maximum amperage I can take fill advantage of? And is there such a thing as an l2 charger too powerful to use? Or does it just automatically step down to what I can handle?

Oilpan4
Posts: 1838
Joined: Wed Jan 09, 2019 10:51 pm
Delivery Date: 10 May 2018
Leaf Number: 004270

Re: How can I tell how many amps my Nissan Leaf 2017 is receiving at a charger?

Sun Oct 04, 2020 12:19 pm

A 2017 will max out at 6.6kw. If you plug in say a 7.2kw evse the car is only going to draw 6.6kw. Same as my 2011, if I plug mine into a 6.6kw or 7.2kw evse it's only going to draw about 3.6kw because that's the max that the 2011 and 2012 cars charged with.
I think if you have leaf spy and turn the car on while plugged in it will show power draw, but I never tried it on my car.
"THE ABOVE POST CONTAINS MISLEADING AND INACCURATE INFORMATION. PLEASE CONSIDER IT OPINION, NOT FACT". -someone who I offended and is unable to produce the facts in question.

LeftieBiker
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Re: How can I tell how many amps my Nissan Leaf 2017 is receiving at a charger?

Sun Oct 04, 2020 12:20 pm

If you prefer amps, the max draw for a Leaf is 27.5 amps.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
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PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

SageBrush
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Re: How can I tell how many amps my Nissan Leaf 2017 is receiving at a charger?

Sun Oct 04, 2020 1:26 pm

drbrake wrote:
Sun Oct 04, 2020 11:23 am
Would I need to install Leaf Spy or something?

What us the maximum amperage I can take fill advantage of? And is there such a thing as an l2 charger too powerful to use? Or does it just automatically step down to what I can handle?
EVSE or DCFC ?
2013 LEAF 'S' Model with QC & rear-view camera
Bought Jan 2017 from N. California
Two years in Colorado, now in NM
03/18: 58 Ahr, 28k miles
11/18: 56.16 Ahr, 30k miles
09/20: 54.3 Ahr; 38k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

1byte
Posts: 11
Joined: Mon Oct 05, 2020 12:10 pm
Delivery Date: 01 Aug 2020
Leaf Number: 301105

Re: How can I tell how many amps my Nissan Leaf 2017 is receiving at a charger?

Tue Oct 06, 2020 11:40 am

Leaf Spy Lite (free for Android) or Leaf Spy Pro will indeed tell you how many amps are going into the battery via displaying a negative number. Negative number equals amps going into battery, positive equals amps coming out. Remember this is the amps going into the battery. If you are sitting in the car while charging and also running other things like heat or air con, you'll end up with less amps going into the battery.

volts (battery pack volts) * amps = watts
watts \ 1000 = kW (or kWh)

At a L2 6.6kWh charger you should see 15-16 amps going into your battery depending upon other active power loads.
At a DC 50kWh charger you should see a range between 100 - 125 amps going into your battery.
2017 Leaf - 11bars - 40,000 miles
Central Texas - SOH=77% - Hx=50% - 61.9 AHr
427QC - 647 L1/L2

cwerdna
Posts: 11997
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: How can I tell how many amps my Nissan Leaf 2017 is receiving at a charger?

Tue Oct 06, 2020 11:50 am

1byte wrote:
Tue Oct 06, 2020 11:40 am
At a L2 6.6kWh charger you should see 15-16 amps going into your battery depending upon other active power loads.
At a DC 50kWh charger you should see a range between 100 - 125 amps going into your battery.
Charging rate is measured in kW, not kWh. 6.6 and 50 kWh chargers make no sense.

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Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

SageBrush
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Re: How can I tell how many amps my Nissan Leaf 2017 is receiving at a charger?

Tue Oct 06, 2020 2:53 pm

1byte wrote:
Tue Oct 06, 2020 11:40 am
Leaf Spy Lite (free for Android) or Leaf Spy Pro will indeed tell you how many amps are going into the battery via displaying a negative number. Negative number equals amps going into battery, positive equals amps coming out. Remember this is the amps going into the battery. If you are sitting in the car while charging and also running other things like heat or air con, you'll end up with less amps going into the battery.

volts (battery pack volts) * amps = watts
watts \ 1000 = kW (or kWh)

At a L2 6.6kWh charger you should see 15-16 amps going into your battery depending upon other active power loads.
At a DC 50kWh charger you should see a range between 100 - 125 amps going into your battery.
Thanks for making the effort to get units right. It helps a LOT. A few typos though:

1000* watt = kW
Chargers and EVSEs provide power, thus kW.
Over a charging session, power * time = kWh (energy)
2013 LEAF 'S' Model with QC & rear-view camera
Bought Jan 2017 from N. California
Two years in Colorado, now in NM
03/18: 58 Ahr, 28k miles
11/18: 56.16 Ahr, 30k miles
09/20: 54.3 Ahr; 38k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

1byte
Posts: 11
Joined: Mon Oct 05, 2020 12:10 pm
Delivery Date: 01 Aug 2020
Leaf Number: 301105

Re: How can I tell how many amps my Nissan Leaf 2017 is receiving at a charger?

Wed Oct 07, 2020 11:16 am

SageBrush wrote:
Tue Oct 06, 2020 2:53 pm
Thanks for making the effort to get units right. It helps a LOT. A few typos though:

1000* watt = kW
Chargers and EVSEs provide power, thus kW.
Over a charging session, power * time = kWh (energy)
Completely overlooked the kWh mistake, you all got me :roll:

Now how does 1000 multiplied by watt = kW ?

1000 X 6600 = 6600000 kW ??
2017 Leaf - 11bars - 40,000 miles
Central Texas - SOH=77% - Hx=50% - 61.9 AHr
427QC - 647 L1/L2

SageBrush
Forum Supporter
Posts: 6242
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: How can I tell how many amps my Nissan Leaf 2017 is receiving at a charger?

Wed Oct 07, 2020 12:24 pm

1byte wrote:
Wed Oct 07, 2020 11:16 am
Now how does 1000 multiplied by watt = kW ?

1000 X 6600 = 6600000 kW ??
watt = watt
1000 = k
multiple watt by 1000 on the left and multiple watt by 'k' on the right

So e.g.,
6.6 kW = 6,600 watts
2013 LEAF 'S' Model with QC & rear-view camera
Bought Jan 2017 from N. California
Two years in Colorado, now in NM
03/18: 58 Ahr, 28k miles
11/18: 56.16 Ahr, 30k miles
09/20: 54.3 Ahr; 38k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

1byte
Posts: 11
Joined: Mon Oct 05, 2020 12:10 pm
Delivery Date: 01 Aug 2020
Leaf Number: 301105

Re: How can I tell how many amps my Nissan Leaf 2017 is receiving at a charger?

Thu Oct 08, 2020 6:17 am

SageBrush wrote:
Tue Oct 06, 2020 2:53 pm

Thanks for making the effort to get units right. It helps a LOT. A few typos though:

1000* watt = kW
Chargers and EVSEs provide power, thus kW.
Over a charging session, power * time = kWh (energy)
To calculate watts produced or consumed-
volts * amps = watts

To calculate kilowatts produced or consumed-
volts * amps = (watts / 1000)

Rarely does someone have the need to convert kW back to watts as the primary reason for converting it to kW in the first place is to make it more human readable. But if someone did for whatever reason what to yes the formula would be:
1000 * kW = watts
2017 Leaf - 11bars - 40,000 miles
Central Texas - SOH=77% - Hx=50% - 61.9 AHr
427QC - 647 L1/L2

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