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Does Climate Control While Plugged in Decrease Range?

Posted: Wed Mar 13, 2019 12:09 pm
by BeachLeaf
Hi all, while plugged in and using the climate control (but not charging) reduce range?

That is, does the climate control use the vehicle's battery or the power supplied while plugged in. I've been using the app to start charging even though the battery is fully charged, then I turn on the climate control. Wasn't sure if I needed to actually start charging since the vehicle was plugged in. Hope that makes sense.

Thank you,

Mark

Re: Does Climate Control While Plugged in Decrease Range?

Posted: Wed Mar 13, 2019 1:32 pm
by LeftieBiker
BeachLeaf wrote:Hi all, while plugged in and using the climate control (but not charging) reduce range?

That is, does the climate control use the vehicle's battery or the power supplied while plugged in. I've been using the app to start charging even though the battery is fully charged, then I turn on the climate control. Wasn't sure if I needed to actually start charging since the vehicle was plugged in. Hope that makes sense.

Thank you,

Mark
The climate control is powered directly from the battery, and the battery is charged by plugging the car in. So if you have a charging setup that provides less than 20amps, the car will slowly lose charge while plugged in. 20 amps or more and the car will slowly gain charge if the climate control is run while plugged in, because unless blocked from charging by a timer, the car will start to charge under that circumstance. If the car is prevented from charging, of course, it will lose charge.

Re: Does Climate Control While Plugged in Decrease Range?

Posted: Wed Mar 13, 2019 2:22 pm
by jjeff
I always start charging first, then initiate the climate control. Not sure if that is necessary with the newer Leafs but with my '13 if I don't it totally runs off battery and uses nothing from the EVSE, even if plugged in :x My '12 is even worse in that the only way to use the EVSE and climate control is to use the preheat timer, manually running the HVAC even if plugged in results in 0 amps from the EVSE and everything coming from the battery :x :x
As Leftie said, a resistive heater can use close to 20a @ 240v itself(my '13 uses about 18a @ 240v max heat) but A/C will use quite a bit less as will a heat pump heater, especially in warmer weather.

Re: Does Climate Control While Plugged in Decrease Range?

Posted: Wed Mar 13, 2019 3:28 pm
by BeachLeaf
Thank you for the responses. I am using a Juice Box Pro 40 and I wondered if the climate control started to take power from the batteries if it would automatically start charging again while plugged in. I suspect there's a sort of threshold of drain before charging would be initiated again.

I was hoping I could set the charge timer to begin charging then have the climate timer turn on the climate control. Seemingly that's not possible, given you have to pick a timer then pick what has priority charging/climate control (that is if I understand how the timers work...)


Thanks again,

Mark

Re: Does Climate Control While Plugged in Decrease Range?

Posted: Wed Mar 13, 2019 3:36 pm
by LeftieBiker
BeachLeaf wrote:Thank you for the responses. I am using a Juice Box Pro 40 and I wondered if the climate control started to take power from the batteries if it would automatically start charging again while plugged in. I suspect there's a sort of threshold of drain before charging would be initiated again.

I was hoping I could set the charge timer to begin charging then have the climate timer turn on the climate control. Seemingly that's not possible, given you have to pick a timer then pick what has priority charging/climate control (that is if I understand how the timers work...)


Thanks again,

Mark
The car should start charging again as soon as the climate control is activated. Now, about the bolded part above: it isn't a good idea to leave the car plugged in, but not charging, for more than a few hours, as this can slowly drain the 12 volt battery. New leafs seem to compensate for that, but not older ones. If it were me, I wouldn't take the chance...

Re: Does Climate Control While Plugged in Decrease Range?

Posted: Wed Mar 13, 2019 3:42 pm
by LeftieBiker
jjeff wrote:I always start charging first, then initiate the climate control. Not sure if that is necessary with the newer Leafs but with my '13 if I don't it totally runs off battery and uses nothing from the EVSE, even if plugged in :x My '12 is even worse in that the only way to use the EVSE and climate control is to use the preheat timer, manually running the HVAC even if plugged in results in 0 amps from the EVSE and everything coming from the battery :x :x
As Leftie said, a resistive heater can use close to 20a @ 240v itself(my '13 uses about 18a @ 240v max heat) but A/C will use quite a bit less as will a heat pump heater, especially in warmer weather.
First, the resistive heater always runs in cold weather to preheat, so that drain should be assumed even with a heat pump present. Now, about the bolded part: the climate control always takes power ONLY from the pack. The pack should always start to charge when the car is plugged in with the climate control running, so I'm not sure what you mean. If you are losing charge with the car plugged in and the CC on, it's because the EVSE isn't providing 100% of what is needed - it shouldn't be that the car is not charging from the EVSE. Are you using a charge timer?

Re: Does Climate Control While Plugged in Decrease Range?

Posted: Wed Mar 13, 2019 4:05 pm
by BeachLeaf
When I checked the charging status when the cc was on and car was plugged in - I didn't see any lights indicating that the car was charging.

I have been leaving the car plugged in all night and haven't noticed any issues with the 12 volt battery maintaining charge. The car is equipped with the small solar panel on the back spoiler that is technically supposed to help keep the 12 volt battery charged...

I'll have to run some more tests to see how things work with regard to plugged in/charging and climate control usage.


Thanks again,

Mark

Re: Does Climate Control While Plugged in Decrease Range?

Posted: Wed Mar 13, 2019 4:58 pm
by LeftieBiker
Once again: are you sure that a charging timer isn't presently set? Nissan did make some undocumented or little-documented changes in the 2018, so it isn't impossible that they did something in this area as well...

Re: Does Climate Control While Plugged in Decrease Range?

Posted: Thu Mar 14, 2019 12:36 pm
by BeachLeaf
I do have a charge timer set with a very large window of time - 8:10 PM - 8:30 AM with the cc timer to come on within that time window. Seemingly, once the car is fully charged it doesn't matter if the charge timer is set to continue, as there's nothing to continue.

My hope/thought was with having the large time window of charging and having the cc set within that time frame, would be that charging would begin again once the cc comes on. Unless something is happening absent of the charge light indicator, the cc comes on as timed with no additional charging taking place...

I don't have the climate control on for very long, so that could be part of why charging doesn't resume (not enough battery drain to go below the threshold). As it stands now, I don't appear to be losing any range when the cc comes on for the short time frame I'm using it.

Thanks,

Mark

Re: Does Climate Control While Plugged in Decrease Range?

Posted: Thu Mar 14, 2019 4:27 pm
by LeftieBiker
I do have a charge timer set with a very large window of time - 8:10 PM - 8:30 AM with the cc timer to come on within that time window. Seemingly, once the car is fully charged it doesn't matter if the charge timer is set to continue, as there's nothing to continue.
The charge timers have played a remarkable amount of Hell with Leaf drivers over the years. Just for giggles, try turning off all charge timers and see what happens.