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LEAFer
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L1 EVSE: Interchangeable ?

Thu Apr 14, 2011 1:57 pm

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1. Using the Nissan supplied unmodified Panasonic L1 EVSE to charge a Volt.
No workee ! The orange "Charge" LED light blinks on the EVSE (and on the dash of the Volt) and a continuous clicking sound is heard from the EVSE in approximate sync with the LED.

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2. Using the GM supplied unmodified Voltec L1 EVSE (in standard mode) to charge a LEAF.
Works. (Monitoring for a while; will report back soon.).
Update: I monitored for 3.5hrs and the SmartMeter indicated 5kWh added (+/- since it only tracks whole kWhs). This agrees with a 12A*120V charging rate.

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3.  Using the GM supplied unmodified Voltec L1 EVSE (in REDUCED 8A mode) to charge a LEAF.
Update: I monitored for 3.0hrs and the SmartMeter indicated 3kWh added (+/- since it only tracks whole kWhs). This agrees with a 8A*120V charging rate.

( I don't have a TED or clamp-on ammeter; recording the dedicated 2nd SmartMeter was my best alternative. I should have used the Kill-A-Watt (!duh!), but thought of that too late. )

:geek:
Last edited by LEAFer on Thu Apr 14, 2011 9:42 pm, edited 1 time in total.
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Lost CapacityBar 6/6/13 @34,173 miles while in LEAF Battery Monitor: 83.41%, 71.4F (avg); cool overnight;

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GeekEV
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Re: L1 EVSE: Interchangeable ?

Thu Apr 14, 2011 2:59 pm

Huh. That's interesting. Ingineer mentioned something about it didn't pass the "diode check" (not sure what that means). I wonder if that has something to do with it? I also wonder if an Ingineer upgraded unit would make any difference...

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davewill
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Re: L1 EVSE: Interchangeable ?

Thu Apr 14, 2011 3:08 pm

GeekEV wrote:Huh. That's interesting. Ingineer mentioned something about it didn't pass the "diode check" (not sure what that means). I wonder if that has something to do with it? I also wonder if an Ingineer upgraded unit would make any difference...
It was the other way around, it didn't TEST for a diode on the car. That wouldn't keep it from working with any cars, it would MAYBE could cause it to pass A/C when it shouldn't, but wouldn't cause it to fail like this.

This is just weird. It really should work. So much so, that I question whether that particular EVSE might have some problem.
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LakeLeaf
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Re: L1 EVSE: Interchangeable ?

Thu Apr 14, 2011 3:16 pm

The point to having a standard is so that manufacturers design to the standard. Disappointing to see things not working as one would expect.

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garygid
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Re: L1 EVSE: Interchangeable ?

Thu Apr 14, 2011 9:40 pm

The Volt might measure the Control Pilot at/near/below Ground level, since it should go to -12v and to a positive voltage as well.

The Nissan/Panasonic L1 EVSE (and the mod-L1) Control Pilot does not go to -12, but just down to/near ground. Thus, it is not fully J1772 complient.

So, not surprising that it will not work for the Volt.
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LEAFer
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Re: L1 EVSE: Interchangeable ?

Thu Apr 14, 2011 9:51 pm

I updated the OP post-test with results for 2. and 3.

Gary might be on to something with the -12V being out-of-spec on the Nissan L1 EVSE.
2011 Silver SL+QC [Mfg: 11/2010] 36mo/15k LEASE
06Jun2013 Status [28.5 months][34,173 miles][11 bars]
Lost CapacityBar 6/6/13 @34,173 miles while in LEAF Battery Monitor: 83.41%, 71.4F (avg); cool overnight;

tps
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Re: L1 EVSE: Interchangeable ?

Fri Apr 15, 2011 12:53 am

garygid wrote:The Volt might measure the Control Pilot at/near/below Ground level, since it should go to -12v and to a positive voltage as well.

The Nissan/Panasonic L1 EVSE (and the mod-L1) Control Pilot does not go to -12, but just down to/near ground. Thus, it is not fully J1772 complient.

So, not surprising that it will not work for the Volt.
I hate it when that happens! :)

Shades of RS232, which also has the positive/negative thing going on, which also is often violated by certain products...

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Re: L1 EVSE: Interchangeable ?

Fri Apr 15, 2011 5:41 am

I really wish the leaf had an 8 amp mode. Sometimes you might have an outlet and have no clue what the amp draw is from other stuff on the circuit, but might have plenty of time to charge. Think: airport. There's an airport parking facility by me that agreed to let mr plug in, but there is a coke machine on that circuit.

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davewill
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Re: L1 EVSE: Interchangeable ?

Fri Apr 15, 2011 7:11 am

nater wrote:I really wish the leaf had an 8 amp mode. Sometimes you might have an outlet and have no clue what the amp draw is from other stuff on the circuit, but might have plenty of time to charge. Think: airport. There's an airport parking facility by me that agreed to let mr plug in, but there is a coke machine on that circuit.
You might have been OK. Most commercial plugs are 20a. You can tell by looking at the receptacle, one of the slots has a horizontal leg sticking out. Now, I don't know how much a coke machine draws, but I bet that info is on the net somewhere. It would be nice to be able to slow the charge, however. Personally, I think it would be better to have the feature in the vehicle than the EVSE.
Last edited by davewill on Fri Apr 15, 2011 2:58 pm, edited 4 times in total.
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Re: L1 EVSE: Interchangeable ?

Fri Apr 15, 2011 9:05 am

LEAFer wrote:

Code: Select all

1. Using the Nissan supplied unmodified Panasonic L1 EVSE to charge a Volt.
No workee ! The orange "Charge" LED light blinks on the EVSE (and on the dash of the Volt) and a continuous clicking sound is heard from the EVSE in approximate sync with the LED.
A local EVSE manufacturer (Shorepower Technologies) has been working with a Volt owner as their EVSEs haven't been charging the Volt either. The official response is that the Volt is "monitoring additional undefined criteria not required by the standard" and they've been working with GM to implement the fix.
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