Spacep0d
Forum Supporter
Posts: 63
Joined: Wed Feb 13, 2019 6:14 pm
Delivery Date: 14 Feb 2019
Leaf Number: 309151
Location: Santa Clarita, CA
Contact: Website

Trickle Charging Extremely Slow!

Mon Feb 18, 2019 3:28 am

Hi there Leafers,

I'm using the standard EVSE from Nissan which came from the prior owner, purchased with the quick-charge upgrade. This thing looks brand new and the installation screws were still in the package. I have a 2018 LEAF S with the optional quick-charge package installed.

I'm using a 120v outlet for trickle charging. By my estimates, assuming 24 hours to charge from 0-151, I should get 6 miles per hour. However, over the course of many hours I'm only seeing 1 extra mile added to range, from 64 to 65 (so it's not like I'm trying to charge to 100% and seeing a plateau).

Any ideas? I want to try a different outlet, but this would require an extension cord as it's blocked by the storage cabinet that came with the garage when I bought the place.

I'm working on getting a Level 2 charger installed (collecting bids). If anyone knows a great installed in the Santa Clarita area (for a townhome, challenging install), I'm all eyes. :D

Any ideas? Is it safe to use an extension cord for a bit just to see if I can see a difference? I have a heavy duty one for garage use, but I don't know its exact specs.

Thanks!

Spacep0d
Last edited by Spacep0d on Mon Feb 18, 2019 5:23 pm, edited 2 times in total.
--
2018 Nissan LEAF S
^My First EV!

baustin
Posts: 711
Joined: Tue Feb 24, 2015 1:23 pm
Delivery Date: 09 Mar 2015
Leaf Number: 402162
Location: North Las Vegas, NV

Re: Trickle Charging Extremely Slow!

Mon Feb 18, 2019 3:34 am

You need to look at the charge percentage (how full the battery is) not the range estimate on the GOM. Trickle charging (120v) is slow. Moving to another outlet is not going to change anything. You will just have to suffer through the slow charging until you get a Level 2 EVSE installed.
2013 Leaf SV - Cayenne Red - QC Port - LED Headlights

Oilpan4
Gold Member
Posts: 957
Joined: Wed Jan 09, 2019 10:51 pm
Delivery Date: 10 May 2018
Leaf Number: 004270

Re: Trickle Charging Extremely Slow!

Mon Feb 18, 2019 4:27 am

Technically according to NEC we are not supposed to use an extension cord on an evse.
NEC assumes we are all stupid and will use a cheap cord, melt it down and burn down our houses.
What year leaf is it?
You may already have a L2 evse.

The cheapest way to get level 2 charging is to get a duosida 16 amp evse.
I got mine for $160.

12 amp level 1 charging sucks. It only puts about 1,400 watts into your car.
A 16 amp level 2 charger will do more like 3,800 watts.
It will cut your turtle to 100% charge time from more than 24hr down to around 10 hours.

Get a full 50 amp circuit installed. Trust me if you hate 1.4kw charging you are really going to like 3.8kw charging and you will love 6.6kw if your car can do 6.6kw. If not your next car will likely do 6.6kw or higher.

I went from 1.4kw to 2.9kw when I modded my original leaf evse to run 240v, then I bought the duosida evse which gave me 3.8kw then stepped up to a 7.2kw home chademo.

Did you charge over night and not get enough range to go where you needed to go in the morning?
2011 white SL leaf with 2014 batt.
Chargers: Panasonic brick moded for 240v, duosida 16a 240v and a 10kw setec portable CHAdeMO
Location: 88103

LeftieBiker
Moderator
Posts: 13471
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Trickle Charging Extremely Slow!

Mon Feb 18, 2019 5:36 am

With 120 volt L-1 charging it doesn't matter if the EVSE is upgraded for L-2 charging. You are still only feeding it 120 volts. And yes, you need to read the charge percentage, not the range estimator! You can also tell roughly by looking at the three blue charge lights on top of the dashboard: if one is lit and flashing, you have less than 33% charge. If one is lit and one is flashing, you have between 33% and 66% charge. If two are lit and the third is flashing, you have between 66% and 99% charge. When all three lights are lit solid, the car is pretty much fully charged but is equalizing the cells. That only lasts a few minutes, usually. When all three lights go out after that, the car is fully charged and equalized.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

User avatar
davewill
Posts: 5080
Joined: Thu Mar 17, 2011 6:04 pm
Location: San Diego, CA, US

Re: Trickle Charging Extremely Slow!

Mon Feb 18, 2019 11:15 am

How cold is it where you are? If it's very cold (sub 15 degrees?) The battery heater could be kicking in and sapping your charge rate. You can certainly try an extension cord, especially just for a temporary test. If you have a multi-meter, it would also be good to measure the voltage before and during a charge to see the the voltage is dipping too much.

P.S. If you would fill in your user profile with your general location, we wouldn't have to ask about the weather.
2014 Rav4 EV, Blizzard Pearl White
2011 LEAF SL w/QC, Blue Ocean, returned at end of lease

User avatar
Nubo
Posts: 5458
Joined: Fri May 28, 2010 11:01 am
Delivery Date: 31 Oct 2014
Location: Vallejo, CA

Re: Trickle Charging Extremely Slow!

Mon Feb 18, 2019 11:38 am

Level 1 consumes about 1400 watts, or 1.4kWH per hour, from the wall. Not all of that gets into the battery as there are conversion losses, plus energy required to power the coolant pump, etc.. My rule of thumb is L1 gives me about 4 miles of range per hour. Your mileage may vary depending on how efficient your driving is. Some folks here can squeeze a lot more out of a kWH than me. :)

Note - if you are leaving the car "on" while charging, to view its progress, keep in mind the onboard computer and displays will consume an additional portion of the meager L1 power input, slowing down the charge further. Even worse if you've got other systems on (fan, etc).

Not sure what it would do for the distance-to-empty estimation but leaving the car on might also explain why the estimation is not improving (computer interpreting this as you "driving" but sitting idle in traffic and consuming power). I'm speculating here as the only time I've left the car on while charging is with fast-charging, where the effect would be far smaller.
I noticed you're still working with polymers.

Lothsahn
Posts: 544
Joined: Thu Apr 05, 2018 4:35 pm
Delivery Date: 04 Jan 2018
Leaf Number: 007797

Re: Trickle Charging Extremely Slow!

Mon Feb 18, 2019 12:19 pm

I agree with Nubo: expect around 4 miles per hour of charging, roughly speaking. But this is with the car plugged in and powered off. If you have the car on, that car itself will use 100-200W of power for computers, pumps, and accessories. Turn on the AC or heater and your power consumption can EASILY exceed the charging power, draining the battery or making a charge take forever.

L1 charging is very slow, but if you have the car off, it will work. I've had the car nearly a year, and all we have is L1 charging, and it works fine. We drive the car during the day and charge it overnight. It's always charged the next morning.

Note: L1 charging takes about 20-24 hours when the car is brand new. Since ours is degraded and only provides ~12kWh usable capacity, it charges "twice as fast" (12 hours from completely empty).
2011 Silver SV, purchased 2018, lives in Missouri (previously in CA)
LeafSpy Pro + BAFX Products OBDII dongle
Battery swap 2019/04/24 (87% SOH, 12 bar)

Spacep0d
Forum Supporter
Posts: 63
Joined: Wed Feb 13, 2019 6:14 pm
Delivery Date: 14 Feb 2019
Leaf Number: 309151
Location: Santa Clarita, CA
Contact: Website

Re: Trickle Charging Extremely Slow!

Mon Feb 18, 2019 1:08 pm

baustin wrote:You need to look at the charge percentage (how full the battery is) not the range estimate on the GOM. Trickle charging (120v) is slow. Moving to another outlet is not going to change anything. You will just have to suffer through the slow charging until you get a Level 2 EVSE installed.
Howdy,

Thanks. How do I see how full the battery is beyond the percentage shown on the dash? Yeah I didn't suspect anything would change with another outlet but I was out of things to try. ;) 120v is just too slow to be sustainable in any way for me, even with this long weekend.
--
2018 Nissan LEAF S
^My First EV!

Spacep0d
Forum Supporter
Posts: 63
Joined: Wed Feb 13, 2019 6:14 pm
Delivery Date: 14 Feb 2019
Leaf Number: 309151
Location: Santa Clarita, CA
Contact: Website

Re: Trickle Charging Extremely Slow!

Mon Feb 18, 2019 1:10 pm

LeftieBiker wrote:With 120 volt L-1 charging it doesn't matter if the EVSE is upgraded for L-2 charging. You are still only feeding it 120 volts. And yes, you need to read the charge percentage, not the range estimator! You can also tell roughly by looking at the three blue charge lights on top of the dashboard: if one is lit and flashing, you have less than 33% charge. If one is lit and one is flashing, you have between 33% and 66% charge. If two are lit and the third is flashing, you have between 66% and 99% charge. When all three lights are lit solid, the car is pretty much fully charged but is equalizing the cells. That only last a few minutes, usually. When all three lights go out after that, the car is fully charged and equalized.
Indeed. I have the adapter on the Nissan EVSE for Level 1, so I expected slow, but it's so much slower than I anticipated (even knowing the 24 hour figure). Okay, I'll look at the percentage instead because the range estimator is downright discouraging. Great tip about the blue flashing lights too.

Thanks!
--
2018 Nissan LEAF S
^My First EV!

Spacep0d
Forum Supporter
Posts: 63
Joined: Wed Feb 13, 2019 6:14 pm
Delivery Date: 14 Feb 2019
Leaf Number: 309151
Location: Santa Clarita, CA
Contact: Website

Re: Trickle Charging Extremely Slow!

Mon Feb 18, 2019 1:11 pm

davewill wrote:How cold is it where you are? If it's very cold (sub 15 degrees?) The battery heater could be kicking in and sapping your charge rate. You can certainly try an extension cord, especially just for a temporary test. If you have a multi-meter, it would also be good to measure the voltage before and during a charge to see the the voltage is dipping too much.

P.S. If you would fill in your user profile with your general location, we wouldn't have to ask about the weather.

SoCal, and no longer raining. Very mild here. Maybe 50 degree low at night right now, or slightly colder. I will definitely put my location in. Thanks!
--
2018 Nissan LEAF S
^My First EV!

Return to “Problems / Troubleshooting”