webeleafowners
Posts: 518
Joined: Mon Oct 05, 2015 5:37 pm
Delivery Date: 06 Oct 2015
Location: Okanagan Valley British Columbia

Any problem charging at leaf at a lowly 8 amps.

Wed Mar 21, 2018 2:37 pm

Hi all. John and Angela here again. We are a two EV household. We have a smart ED and a 2016 Leaf SE. The smart game with this nifty 8/12 amp 120 volt pushbutton selectable EVSE. We really haven't used it that much since we got the Juice box 40 amp wifi EVSE a couple years ago. But this year Angelas wants more room in the garage for her projects so the leaf is out and the smart is in. If I need a faster charge on the Leaf I can just run the cable under the door from the Juice box. However I will be using the old smart EVSE for the leaf as I have it up on the columnt by the door and plug it into the Christmas light plug. See pic. We live in Canada and most of the year it is not a really hot climate but in summer we can hit 37 degrees C. Here is what I was thinking. On days when I want to start out with a 100 percent full charge I'll plug it in before bed when it is cooler and time it so that it will be 100 percent just before I hit the road in the morning. That way its not at 100 percent for very long. On days where it is not down to much but I still need that 100 percent in the morning I can use the 8 amp setting for even a slower charge. Thoughts on the low current charging?

Also, any problem having the car plugged into the EVSE but the EVSE not being plugged in? (or in this case the light switch for the outside plug not being turned on?) Then I can plug it in when i come home but not turn the switch on till I go to bed.

The car is two years old next month. I don't have leaf spy so don't know how my battery is doing but it still charges to 180 ish kilometers at 18 degrees C. About 10,000 ish KM on the car. I have heated it up a couple times (consecutive fast charges on long hot trips but probably less than 20 fast charges overall. We love the car and have had zero problems. Planning on a long range generation 2 leaf to replace the smart ED in 2020.

As per usual, thanks for your comments. Great knowledgeable community here.

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2015 Smart Electric Drive convertible.
2016 Nissan Leaf SV 30KWh
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DaveinOlyWA
Posts: 13231
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Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: Any problem charging at leaf at a lowly 8 amps.

Wed Mar 21, 2018 2:50 pm

I will pass on the switch thing but there is no issue with 8 amp charging other then efficiency.

It will take a LONG time to get significant charge. BMS management will take ~ 300 watts from the 960 going in so you will have to charge quite a long time even if starting at a relatively high SOC.
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased. 29,413 miles. 2018 S40; 11,987 miles, 485 GIDs, 37.6 kwh 110.89 Ahr , SOH 96.00, Hx 115.22
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webeleafowners
Posts: 518
Joined: Mon Oct 05, 2015 5:37 pm
Delivery Date: 06 Oct 2015
Location: Okanagan Valley British Columbia

Re: Any problem charging at leaf at a lowly 8 amps.

Wed Mar 21, 2018 2:55 pm

DaveinOlyWA wrote:I will pass on the switch thing but there is no issue with 8 amp charging other then efficiency.

It will take a LONG time to get significant charge. BMS management will take ~ 300 watts from the 960 going in so you will have to charge quite a long time even if starting at a relatively high SOC.


Yah we get that. But some trips I need to start out at 100 percent to be in my comfort zone so for example if the night before I come back with say 83 percent and I want 100 in the morning....you get the picture.
2015 Smart Electric Drive convertible.
2016 Nissan Leaf SV 30KWh
EV only Family...well except for the big diesel motorhome. :shock:

DaveinOlyWA
Posts: 13231
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Feb 2018
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: Any problem charging at leaf at a lowly 8 amps.

Wed Mar 21, 2018 3:21 pm

webeleafowners wrote:
DaveinOlyWA wrote:I will pass on the switch thing but there is no issue with 8 amp charging other then efficiency.

It will take a LONG time to get significant charge. BMS management will take ~ 300 watts from the 960 going in so you will have to charge quite a long time even if starting at a relatively high SOC.


Yah we get that. But some trips I need to start out at 100 percent to be in my comfort zone so for example if the night before I come back with say 83 percent and I want 100 in the morning....you get the picture.


oh not dissing on the full thing especially if you don't have the 40 kwh version 8-) but better to pound it with 240! I have a lot of times when I don't charge overnight and simply plug in when I get up and it gets to or very near 100% just before I leave. It only takes an hour to boost 30 kwh to full from 80% on L2.

my home version does 5.76 KW and that puts 5.3 KW into the battery (per LEAF Spy) so a good percentage. When I did the L1 thing, I was only getting 1070 in... pretty big chunk lost
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased. 29,413 miles. 2018 S40; 11,987 miles, 485 GIDs, 37.6 kwh 110.89 Ahr , SOH 96.00, Hx 115.22
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

webeleafowners
Posts: 518
Joined: Mon Oct 05, 2015 5:37 pm
Delivery Date: 06 Oct 2015
Location: Okanagan Valley British Columbia

Re: Any problem charging at leaf at a lowly 8 amps.

Wed Mar 21, 2018 3:25 pm

DaveinOlyWA wrote:
webeleafowners wrote:
DaveinOlyWA wrote:I will pass on the switch thing but there is no issue with 8 amp charging other then efficiency.

It will take a LONG time to get significant charge. BMS management will take ~ 300 watts from the 960 going in so you will have to charge quite a long time even if starting at a relatively high SOC.


Yah we get that. But some trips I need to start out at 100 percent to be in my comfort zone so for example if the night before I come back with say 83 percent and I want 100 in the morning....you get the picture.


oh not dissing on the full thing especially if you don't have the 40 kwh version 8-) but better to pound it with 240! I have a lot of times when I don't charge overnight and simply plug in when I get up and it gets to or very near 100% just before I leave. It only takes an hour to boost 30 kwh to full from 80% on L2.


Yah, we have done that more than a few times. Plug it in to the juice box when you get up and ready to go pretty quick. But on hot days this would allow me to at least start out with a little cooler battery. Still at 12 bars right now. I don't think I notice any range change but hard to say with temps up and down. I'll probably care less about retaining the range when we get the long range gen 2 in a couple years. :)

John
2015 Smart Electric Drive convertible.
2016 Nissan Leaf SV 30KWh
EV only Family...well except for the big diesel motorhome. :shock:

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davewill
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Re: Any problem charging at leaf at a lowly 8 amps.

Wed Mar 21, 2018 3:54 pm

Turning on the EVSE with the switch is not a big deal. The EVSE will initialize, then the car should start charging just fine. However, I would avoid turning off the switch while the car is actually charging. If nothing else, it may cause the car to show a fault.
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webeleafowners
Posts: 518
Joined: Mon Oct 05, 2015 5:37 pm
Delivery Date: 06 Oct 2015
Location: Okanagan Valley British Columbia

Re: Any problem charging at leaf at a lowly 8 amps.

Wed Mar 21, 2018 4:18 pm

davewill wrote:Turning on the EVSE with the switch is not a big deal. The EVSE will initialize, then the car should start charging just fine. However, I would avoid turning off the switch while the car is actually charging. If nothing else, it may cause the car to show a fault.


Ahhh. Ok. Resetable faults?
2015 Smart Electric Drive convertible.
2016 Nissan Leaf SV 30KWh
EV only Family...well except for the big diesel motorhome. :shock:

jjeff
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Re: Any problem charging at leaf at a lowly 8 amps.

Wed Mar 21, 2018 4:22 pm

Interesting, the SmartEV has a coiled j1772 cable? If so that's a really nice feature. Some around here have asked about coiled cords but the cheapest EVSEs with that feature seem to start >$1000USD :shock:
I'd also advise against flipping the switch during charging, probably not good for your switch at all. Other than being quite inefficient I don't see any problem charging at 8a @ 120v, just slow as heck :D

edit:
Yes the fault should go away as soon as power is re-applied.
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webeleafowners
Posts: 518
Joined: Mon Oct 05, 2015 5:37 pm
Delivery Date: 06 Oct 2015
Location: Okanagan Valley British Columbia

Re: Any problem charging at leaf at a lowly 8 amps.

Wed Mar 21, 2018 4:31 pm

jjeff wrote:Interesting, the SmartEV has a coiled j1772 cable? If so that's a really nice feature. Some around here have asked about coiled cords but the cheapest EVSEs with that feature seem to start >$1000USD :shock:
I'd also advise against flipping the switch during charging, probably not good for your switch at all. Other than being quite inefficient I don't see any problem charging at 8a @ 120v, just slow as heck :D

edit:
Yes the fault should go away as soon as power is re-applied.


Yah. The coiled cable works well in this situation. The black button (hard to see) switches between 8 and 12 amps. I hose clamped it to the board and screwed the board to the wall. Need to repaint the board yet but it looks pretty good and isn’t visible from the street.
2015 Smart Electric Drive convertible.
2016 Nissan Leaf SV 30KWh
EV only Family...well except for the big diesel motorhome. :shock:

LeftieBiker
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Re: Any problem charging at leaf at a lowly 8 amps.

Wed Mar 21, 2018 4:48 pm

Also, any problem having the car plugged into the EVSE but the EVSE not being plugged in?


It may drain the 12 volt battery if done for enough hours. I'm not entirely sure that the car can detect the EVSE if the latter isn't plugged in, but it may take nothing more than having it plugged into the charging port. Or it may not...
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