Pre Heating Without the App

[DuRam]

Hi. I've read partial answers to my question, but can't find anything conclusive.

I've had a '17 spec Juro for three months now and enjoy it enormously. I've had a dedicated home charger installed and do almost all driving in EV. A total convert.

Being a Juro, it doesn't have the pre-heat app. If I turn the heater on manually whilst charging at home, will this drain the battery? I've read somewhere that it would drain it with a 3 pin charger (4w to heat, against just 3w input from the charge?), but what about with the higher power home charger? Similarly, if it is plugged in, but no longer charging because the battery is full, would a pre-heat force the charging to begin again?

I've also read that pressing the start button once or twice (without brake pedal depressed) can make a difference, but not sure if this is relevant to my query.

I realise the colder months are some time away, but as I'm discovering more, it would be handy to know. Pre heating/cooling would be good, but not if it uses up some of the charge.

Many thanks.

 

[Phevy]

I've mine too short to have used pre-heating. But pre-cooling has not drained the battery; provided it's plugged in.
I don't have a Juro, so not sure why the remote app would apply.
But pre-programming should still be an option, I would think.
As to the draining of the battery, you're not pre-heating for a long time, and some range loss seems acceptable to me for the added comfort.

 

[Woodman411]

Hi. I've read partial answers to my question, but can't find anything conclusive.

I've had a '17 spec Juro for three months now and enjoy it enormously. I've had a dedicated home charger installed and do almost all driving in EV. A total convert.

Being a Juro, it doesn't have the pre-heat app. If I turn the heater on manually whilst charging at home, will this drain the battery? I've read somewhere that it would drain it with a 3 pin charger (4w to heat, against just 3w input from the charge?), but what about with the higher power home charger? Similarly, if it is plugged in, but no longer charging because the battery is full, would a pre-heat force the charging to begin again?

I've also read that pressing the start button once or twice (without brake pedal depressed) can make a difference, but not sure if this is relevant to my query.

I realise the colder months are some time away, but as I'm discovering more, it would be handy to know. Pre heating/cooling would be good, but not if it uses up some of the charge.

Many thanks.

I'm not sure if this helps, according to the user manual in section 3-25:

When the normal charge connector is connected to the normal charge port, the charging indicator is blinking. When charging is started, the charging indicator is illuminated and the charging port courtesy light blinks three times...(J) appears and the predicted charging time display (K) appears on the information screen in the multi-information display.In addition, when the remaining time is less than 1 hour, the predicted charging time display appears --:--.

So according to the above:
- "If I turn the heater on manually whilst charging at home, will this drain the battery?" If this is true, while charging, the J display, the one showing the battery level icon, will decrease, and the K display, the one showing predicted charging time, will increase
- "what about with the higher power home charger?" < same answer above >
- "Similarly, if it is plugged in, but no longer charging because the battery is full, would a pre-heat force the charging to begin again?" The manual on 3-26 says that "charging is complete when the charging indicator turns off". I assume this means that both J and K displays turn off when charging is complete. By turning the heater on, if this triggers the main-battery charge, J and K displays would turn on again.

I would be interested to know the answers to your questions too.

View attachment Screen Shot 2018-07-16 at 9.24.19 PM.png

 

[anko]

With a 16 amps charge station, you add about 2900 watts (after losses in the AC / DC converter. The heater will pull more than 4000 watts. So, yes. The battery will drain a bit during pre heating, even when plugged into a real charge station.

 

[MikkB]

Being a Juro, it doesn't have the pre-heat app. If I turn the heater on manually whilst charging at home, will this drain the battery?

I have a 17 Juro and it definitely does have pre-heating, in fact it's one of my fav features in winter. I use the Phev II app on android. It does use a small amount of charge, mitigated if plugged in, but in my opinion it's worth it. I think it probably warms up the battery a bit so the first part of your journey runs more efficiently anyway after a pre-heat but the experts may or may not agree.

 

[ThudnBlundr]

I researched heaters when we were buying earlier this year, and what I found was that every UK PHEV has electric heating apart from the "basic" 3hs. That was for pre- and post-facelift models 2016 and earlier. So a 3-plus or a Juro should have it

 

[noxid1969]

3h+ (2016) definitely has pre heating/cooling from the App so can't understand why the Juro doesn't as it is a higher spec, is there an SSID card in the user manual?

 

[DuRam]

Thank you Anko in particular, for answering specifically. So it does pull a bit more from the battery, than the charge going in (although pre heating may be a more efficient way of heating, than turning on the heating once driving, I can understand that).

I realise that I was mistaken when I mentioned the app. I should have said pre heating using the on-board timer. I simply haven't had to use that yet. Although some of you seem to suggest that there is an app for a 2017 Juro, which I didn't realise, so I'll check that out.

Thank you people,
DuRam.

 

[user 1877]

Although some of you seem to suggest that there is an app for a 2017 Juro, which I didn't realise, so I'll check that out.

When you do check it out, important to know that for a 2017 Juro you definitely need the Outlander PHEV II App. This applies for both Android and Apple IOS phones.

 

[DuRam]

Update (in case anyone is interested ).

When I first posted this it was the summer and I had no way of testing whether the charger would kick in once pre-heating had started. I can now confirm that the charger does reactivate and top up the battery during pre heating.

I pre heat for 20 minutes each morning just before leaving the house. It does the job nicely. My battery is always full when I set off and I know this because if I take the charger out of the car just before setting off and put it straight back in, the charging only lasts for a few seconds. Last week I had cause to be parked overnight away from home. The next morning the pre heat occurred but it drained about 10% of the battery (both on the gauge and the predicted electric mileage).

So not wholly scientific but proof enough I think. And the result is also pleasing as it means I get both a warm, defrosted car and a full battery for driving.

 

[elm70]

You must have a "fast" charger at home, for still see 100% SOC battery after 20min of pre-heating

I think if you have the 16Amp J1772 charger box, you can get close to 3.7kw, which should cover most the 4kw power from the electric cabin heater

My PHEV has a "standard Mitsubishi" 10A J1772 charger box, so my PHEV, even if it is connected to a charger while pre-heating it still lose 1800w from the battery while is warming up my car. So most of the time I did notice the difference, but sometime not .. since sometime the BMU "forget" about the energy lost/consumed while pre-heating

4kw x 20min = 1.3kwh .. that is about 15% of the PHEV available battery when the battery is as good as new ... else it can be a bit more then that. I guess 4kw is the max power used, if the temperature is not extremely cold, already after 10min it might use less then 4kw for continue the pre-heat program ... so .. possibly 20min pre-heat in general use 1kwh or a bit less then this.

 

[DuRam]

Thank you Elm. Yes I do have a fast charger.

And your technical knowledge is much greater than mine, but your Maths seems to tally with what I'm experiencing. Appreciated.