JonAcampora
Posts: 2
Joined: Tue Sep 15, 2020 4:40 pm
Delivery Date: 15 Sep 2020

Charging Timer Stops at 88% or 89% - 2017 Nissan Leaf

Wed Oct 14, 2020 8:37 pm

Hi,

I recently purchased a 2017 Leaf with the S trim. When using the timer for charging, the battery only charges to 88% or 89%. If I don't use the timer it charges to 100%.

Is this normal? Is there any way to change this?

I've read through many posts but not found any mention of this. I was thinking that the previous owner might of changed some settings that I can't find, but it seems like it's not possible to change the max charge amount on a 2017 with the S trim.

The S trim only has the ability to set the ending time of the charge. I plug it in and set the timer about 12 hours before the end time of 8AM.
This is plenty of time to get to a full charge. The car doesn't start charging when I plug it in and set the timer, so I believe it has plenty of time to charge. I'm guessing that something else is stopping it at around 89%.

I'm using the Primecom Level 2 charger 10-30P. Not sure that would make a difference either, but just want to give as much info as possible.

Thanks in advance! 🙂

goldbrick
Posts: 961
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: Charging Timer Stops at 88% or 89% - 2017 Nissan Leaf

Thu Oct 15, 2020 10:54 am

i'd double check your clock settings. Is the car still charging when it hits 89% of are the lights completely off?

JonAcampora
Posts: 2
Joined: Tue Sep 15, 2020 4:40 pm
Delivery Date: 15 Sep 2020

Re: Charging Timer Stops at 88% or 89% - 2017 Nissan Leaf

Sat Oct 17, 2020 8:11 am

Thanks goldbrick! I’ll check the clock settings. I have not looked at those yet.

And good point on the car still charging at 89%. I haven’t checked on it right before the timer is set to expire.

I’ll do that next time I charge it and report back. Gives me an excuse to drive it. I’m really enjoying this car!

PrairieLEAF
Posts: 119
Joined: Tue Sep 10, 2019 8:58 am
Delivery Date: 04 Feb 2019
Location: Weld County, Colorado

Re: Charging Timer Stops at 88% or 89% - 2017 Nissan Leaf

Sat Oct 17, 2020 4:48 pm

I wonder if the PrimeCom is tapering down charging current more than the car expects it to, so the car isn't starting the charge soon enough to reach 100% by the timer set time.

You may need to disable the charge timer every time you want to charge to 100% with the PrimeCom, as you found.

There isn't a charge-limiting setting on the car that I'm aware of.

You might experiment with the Nissan EVSE and see if the timer acts the way it should.

Congrats on the 2017!
2016 LEAF S-30 w/QC "Lexie"

goldbrick
Posts: 961
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: Charging Timer Stops at 88% or 89% - 2017 Nissan Leaf

Sat Oct 17, 2020 7:20 pm

^Good points. A quick scan of the PrimeCom on Amazon shows it has internal overheat protection as well as lots of other safety features. Maybe one of those is throttling the current before the car hits its target.

In any event, unless you are charging to 100% the timers are a trial and error procedure to find the right start and stop times to get to the desired end SOC. Even if you are charging to 100% it sounds like some trial and error may be in order.

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