Actual EV Range and Temp Relations

when you say 'ev range', i'm assuming you're talking about the estimate? i don't think running the ice, more or less, is going to affect how well the battery performs?

 

Correct...the estimate.

But using EV smartly will also help you get more real miles out of it, too.

For example...
During warmer months, if I go on a long trip, I feel like I haven't done a very good job unless I have gotten 25+ miles of EV out of one charge.

It's all about picking your best spots for EV.

 

Just a note about charging.
I always set my timer to be done charging about 1/2 hour before I drive off, but yesterday was different at the last minute my friend drove and my car sat all day and night with a full charge till this morning. So when I went to coffee this morning which I always make in all EV, but today the ICE fired after I had gone about 1 mile. Conclusion, which I am sure everyone knows but I'am just confirming, it does make a big diffrence to have your battery warm just before drive off.

 

interesting! what was the garage temp?

 

45 degrees

 

At that temp it has to be one of those anomaly moments. I've monitored temps a lot and even right after charging I don't see a huge difference between battery temp and coolant temp.

 

That's good to know. Thanks!

 

it would be interesting to know how much the battery temp goes up from 45 right after a full charge.

 

You mean as you are driving?

If so, not near as much as you think. I've monitored battery temp in the PiP and the Gen3. Usage seems to affect the Gen3 batteries much more than ours.

 

for what its worth I haven't seen a difference between charging outside when its been 10 degrees and heating in my garage where the car tells me its 40. Tested that a number of times over the last few weeks.

 

You don't find the battery a little more sluggish at 10 degrees?

 

i'm wondering; if it's 45 degrees in the garage, then i'm assuming the battery is 45 degrees. you start with an empty battery and apply a full charge. what is the temp of the battery when the charge completes, before you drive away. the reason i'm wondering is because retired said his ice came on because he had charged 24 hours previously, so the battery was full, but cold (45) when he drove it. usually, his ice doesn't come on if he drives right after charging.

 

Mine is only ever a degree or 2 above ambient. I think his recent case was an anomaly.

XT1060 ?

 

"You don't find the battery a little more sluggish at 10 degrees?"​

I'm not sure I'm understanding your question.​

I get to charge when out and about - what I'm saying is charging fully at Chargepoint when it was 10 degrees gave me the same 9.8 EV est as when I've charged at home in a garage that was in the 40's. A few times this was charging from 0 to full as I was doing so stopping for breakfast on a drive into Boston. Other times it was more like a 30-40 min charge while getting groceries.​

if by sluggish you mean charging slower then yes, bigtime - I used to be able to get 2.2 miles per 10 minutes and in cold temps its been 1.3-1.5 ​

as for that warmer garage - for most of my drives during the day I'm driving minutes after charging but weekday mornings the charging was over and done with 10 hrs ago​

​

 

that's amazing. i thought the prohibition against recharging the battery right after driving was due to temperature. perhaps the temp goes way up while discharging the battery? or maybe it only matters in summer when air temps are high.

 

I think there are virtually no worries about the battery getting too hot this time of year.

Perhaps if I had measured the temp right after peak charge rate then it might have been a few degrees higher, too. Remember, it is pulling air across the battery during charging regardless of the ambient or battery temp.

I definitely could be wrong on this, but I really don't remember that prohibition coming from the manual, just some people on here. I would say that if people routinely run the HSI anywhere close to the power bar in EV or brake hard a lot then those are the people that would have any sort of heat concerns. Driving conservatively doesn't do a whole heck of a lot to the battery temp either.

 

Thanks for sharing this data!! Can I ask if you are all using OEM or LRR tires, and what psi you are using? I'm guessing you could possibly stretch each individual's range by maybe 5 - 10%...??

Thanks

 

fyi, all prius oem's are lrr.

 

Ah, that is encouraging to know. So the Goodyear Assurance OEMs on my PiP are LRRs? The lettering on the tires is simply Goodyear Assurance without Fuel Max added to the name. The list of LRR tires pinned at the top of the forum page link includes Goodyear Assurance Fuel Max so I just assumed I didn't have those mounted. That's good to know, thanks bisco! The link describes these tires as a bit loud but long wearing and good in snow/ice conditions, must be why they were provided for the PiPs here in Maine.