brycenesbitt
Posts: 100
Joined: Sun Jan 31, 2016 8:48 pm
Delivery Date: 01 Feb 2016

Proper settings for Time of Use (ToU) plan and the 2011 Nissan Leaf Charging Timer - Wrong Results?

Mon Mar 19, 2018 10:50 am

I have PG&E Time of Use (ToU) service E6, for which winter peak rates are Monday-Friday from 5pm to 8pm.

I set the leaf Timer 1 to end at 5pm, start at 8pm. and activated it for M-F. It's been working inconsistently ever since.

For example right now the navigation system says it is Monday at 10:30am, and the blue lights are flashing in sequence 1...2...3....
I know that I can press the charge override button to start charging.

Just to be sure I set the dash clock to 10:30 also, but this made no difference.
This Leaf is affected by the AT&T 2G shutdown ( http://about.att.com/innovationblog/2g_sunset ) but the navigation system clock seems to still keep time as long as I manually set daylight savings time.

What am I missing in my settings? I wish the car to charge any time other than 5-8pm M-F.

91040
Posts: 959
Joined: Fri Mar 11, 2011 10:36 pm
Delivery Date: 06 May 2011
Location: Los Angeles, CA

Re: Proper settings for Time of Use (ToU) plan and the 2011 Nissan Leaf Charging Timer - Wrong Results?

Mon Mar 19, 2018 3:57 pm

The blue lights will flash in sequence when you plug in with a timer active. The lights will stop after a period of time (5 minutes?). Charging begins at the time set in the timer.

Another possibility when unexpected charging occurs is that both timers are active.
1st Capacity Bar loss 30k mi 16.25mo 2nd- 49k mi 25.5mo 51.5Ah
3rd- 73k mi 36.5mo 46.9Ah 71% SOH 50.9Hx 4th- 86.5k mi 43mo 42.61Ah 64% SOH 43.79Hx
5th- 101k mi 50.5mo 38.38Ah 58% SOH 37.02Hx Replaced Battery 9/28/15 104.2k mi 36.13Ah

SageBrush
Posts: 2210
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: Colorado

Re: Proper settings for Time of Use (ToU) plan and the 2011 Nissan Leaf Charging Timer - Wrong Results?

Mon Mar 19, 2018 5:48 pm

If I understand the timer correctly, your settings are interpreted like this:

1. Is the battery charged ? If not and it is before 5 pm, start charging when a calculation suggests the battery will be full at 5 pm *.
2. Is it 8 pm ? If the battery is not charged then start charging.

I suggest changing the end time to 3 pm to avoid incursions into your peak rate if you use L2 charging. Skip the end timer if you use L1. Over ride manually as needed.

* Note that this does NOT stop charging at 5 pm if the battery is not yet full.
2013 Model 'S' with QC & rear-view camera
Bought off-lease Jan 2017 from N. California
Car is now enjoying an easy life in Colorado
3/2018: 58 Ahr, 28k miles

GerryAZ
Gold Member
Posts: 1660
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Proper settings for Time of Use (ToU) plan and the 2011 Nissan Leaf Charging Timer - Wrong Results?

Mon Mar 19, 2018 7:11 pm

Set Timer 1 to start at 8:10 PM and end at 4:50 PM.
Set Timer 2 to start at 8:10 PM and end at 8:10 PM
Activate Timer 1 for Sunday, Monday, Tuesday, Wednesday, and Thursday.
Activate Timer 2 for Friday and Saturday.

I prefer to use 24-hour time to avoid the possible AM/PM confusion. Using 24-hour mode:
Timer 1 start at 20:10 and stop at 16:50.
Timer 2 start at 20:10 and stop at 20:10.
Activate Timer 1 for Sunday through Thursday and activate Timer 2 for Friday and Saturday.

I recommend 10 minutes after the hour to start and 10 minutes before the hour to stop to avoid the possibility of charging briefly on peak if the Leaf's clock is not synchronized to the clock in the revenue meter.

Edited to add some explanation:
Your original Monday through Friday settings do not work because the Monday setting will start charging at 8:00 PM and stop at 5:00 PM on Tuesday. Similarly, the Friday setting will start charging at 8:00 PM on Friday and stop at 5:00 PM on Saturday. This means the car will not charge after 5:00 PM on Saturday until the Monday 8:00 PM start time is reached.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015

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