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Re: Trickle charge question

Posted: Sat Dec 01, 2012 10:20 am
by dgpcolorado
Nubo wrote:Notice the Nissan EVSE "brick" has some holes in the case. When I was using the unit for daily charging, I looped some twine through one of those holes and used that to bear the weight and take all of the strain off the wall plug and cord. The brick is fairly heavy.
I do that also—except that mine is upgraded to 240V—and run my cable along the ceiling of my garage on bicycle hooks to keep it off the floor and out of the way. (I have a lot of dirt on the floor of my garage since I live on a dirt road in snow country; it is a fact of life here.)
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The "brick" is hanging from a screw on the wall.
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The cable hangs down from the ceiling above the front of the car. When not in use I just hang the nozzle on the ceiling hook to keep it out of the way.

Re: Trickle charge question

Posted: Sat Dec 01, 2012 10:37 am
by dgpcolorado
SeattleBlue wrote:Hello! I too use trickle as main charge. One month now and no issues. Did all the the action described by these experienced Leafers!

Question-I would like to get an effective plug monitor to record accurate kwh draw month to month. Recommendations?

Thanks!
It depends somewhat on whether you rent or own your house. If you rent and charge at 120V ("trickle" charge) you could use a Kill-a-Watt meter. However, Phil ("Ingineer") has reported that some of those meters can't handle constant 120 Volts, 12 Amps without overheating. I guess I got lucky since my Kill-a-Watt meter handles 120 V charging without issues. But I only use it when away from home now since I charge at 240 V at home.

If you own your house, meaning that you can install whatever devices you want, an inexpensive option is to use a refurbished utility meter like the one I showed in my message above*. DaveinOlyWA describes how to do it here:
http://www.mynissanleaf.com/blog.php?u=291&b=92" onclick="window.open(this.href);return false;
This is an easy DIY project if you are comfortable working with electrical wiring and outlets. Otherwise an electrician could install it for you.

Others use monitoring systems like The Energy Detective (TED) but that figures to be more expensive.


* My meter currently shows 1722 kWh of home charging since it was placed in service 11½ months ago. Adding that to my small amount of charging away from home, which I log, and dividing into my LEAF mileage gives 3.95 miles/kWh average over the almost one year I've had my car. That total includes winter, summer, preheating, and the efficiency losses of charging. At my local electricity rate of 13¢/kWh, that works out to 3.3¢/mile for my LEAF. And that's why it is fun to have a way to keep track!

Re: Trickle charge question

Posted: Sat Dec 01, 2012 10:43 am
by DaveinOlyWA
SeattleBlue wrote:Hello! I too use trickle as main charge. One month now and no issues. Did all the the action described by these experienced Leafers!

Question-I would like to get an effective plug monitor to record accurate kwh draw month to month. Recommendations?

Thanks!
http://www.amazon.com/P3-International- ... ill+a+watt" onclick="window.open(this.href);return false;

for 120 volt

Re: Trickle charge question

Posted: Sat Dec 01, 2012 10:43 am
by DaveinOlyWA
Nubo wrote:Notice the Nissan EVSE "brick" has some holes in the case. When I was using the unit for daily charging, I looped some twine through one of those holes and used that to bear the weight and take all of the strain off the wall plug and cord. The brick is fairly heavy.
bungy cord connectors!

Re: Trickle charge question

Posted: Mon Dec 03, 2012 4:59 pm
by Reddy

Re: Trickle charge question

Posted: Mon Dec 03, 2012 9:04 pm
by garygid
For manual recording, Kill-a-Watt (120v use only).
Last I heard, on Amazon for under $20.

Re: Trickle charge question

Posted: Tue Feb 05, 2013 1:08 pm
by ebill3
Keep an eye on the Kill a Watt. Using it for L1 charging, mine got hot enough to melt the solder connecting one plug prong to the circuit board. And yes, the outlet (socket) was a good tight fit.

Re: Trickle charge question

Posted: Tue Feb 05, 2013 1:50 pm
by mwalsh
ebill3 wrote:And yes, the outlet (socket) was a good tight fit.
Too tight for my liking. The one I bought practically pulled the ground prong off my EVSE cord plug when I went to unplug it. I took it back to the store and didn't buy another.

Re: Trickle charge question

Posted: Fri May 17, 2013 7:36 am
by tjlyerly
I've got a question about trickle charging as well. I use the trickle charge at home because I don't see the need to pay for a L2 charger (I was on the free Blink charger list but missed the deadline for the free installation). This situation works fine for me. I've had my 2013 SV for about 3 months now and noticed that my range when trickle charging at home once fully charged has gone down from ~98-100 to ~85-90 miles in that time. At first I thought that my battery must be degrading quicker than anticipated. However, my work location installed an L2 charger so I can now charge there as well. So yesterday when I got back in the car after a full charge I noticed my range was back up to 102.

I realize that the L1 charging is less efficient and results in greater loss (i.e. 10-15% less energy leaving the wall is put into the battery), but is there some limit to the amount of juice that can be put into the battery when trickle charging? Does the additional voltage when charging at L2 allow you to "push" more juice into the battery? Appears to be the case with me.
- Reading the posts, everyone seems to agree that there are no adverse effects to the battery of trickle charging but are we sure about that?

Re: Trickle charge question

Posted: Fri May 17, 2013 7:52 am
by Staque
tjlyerly, the range meter (aka Guess-O-Meter) has nothing to do with your state of charge or capacity. All it does is take your current energy remaining and divide it by some unspecified recent mi/kwh figure. If you drive fast on the way home, it will read lower than when you go slow for the last several miles. You almost certainly don't have significant range loss in 3 months.

The L1 charger was "fine" for me until I got my L2. Now I take my kids to school, go to work, run errands at lunch time, and get home with 70 or so miles on the clock. L2 during dinner, and then my wife takes it out in the evening for 30-40 miles without any range anxiety. I've only had the thing for a few weeks, but the L2 is really freedom.