How range is affected

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Ik2025
Posts: 14
Joined: Sat Aug 31, 2024 4:39 pm

Post by Ik2025 »

Sorry for using the R word again but I'm just curious about how different things impact range. The hot and cold weather thing is done to death but:

Assuming the weather, state of charge and particular car was good fit 100miles on a given day.

What would 4 chunky adults do to the range?

What would one person with max heater, seat and wheel on get?

I assume the none heating gadgets are all no significant impact?

Does tyre brand make a big difference?

I know it's not science, I'm just trying to figure out what 40 each way journeys will feel like and airport runs etc (we travel without cases a lot. Just as well really)

MaXPainT
Posts: 135
Joined: Wed Feb 16, 2022 6:34 pm

Post by MaXPainT »

I don't have a lot of experience with actually driving with 4 adults in the car. The car weights 1500kg, a chunky driver would be another 100kg, so 1600kg total according to you results in 100miles. Three more chunky passangers are another 300kg which is 20% more than the original total. So technically, it would result in a 20% range reduction. Obviously it is not that simple, the weight doesn't increase air resistence etc. But I would say 20% is the worst case scenario.

The seat and the wheel heaters are using 12v battery. I haven't noticed any range reduction with them on. The space heater depends on how cold it is outside and was the car preheated or not. Worst I've seen was ~16 km more with the heater off (~10 miles). With 4 people in the car you won't need heating it that much :)

If heating gadgets don't impact the range much, none heating gadgets impact it even less.

Tyres can greatly impact your range. Not just the brand, but winter/summer, tyre model, tyre pressure etc. Usually, the better the grip the worse the range.
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EEEE
Posts: 628
Joined: Mon Aug 16, 2021 10:33 am

Post by EEEE »

It is science! Science with many variable and uncontrollable external factors along with a lack of repeatability.

Hot and cold weather I feel is poorly understood, the actual ambient temperature itself does not affect the range as much/quickly as people think.

The battery pack is warmed when needed, but the rate is base on the temperature of the pack. In the same way a snowman doesn't melt quickly, a massive battery pack of considerable thermal mass also does not heat up or cool down to ambient temperature as quickly (although it is safe to say, as the seasons change, the overall long term ambient temperature does affect the heating of the battery and thus the available capacity for motive travel).

4 chunky adults - careful you do not hit the weight limit. This is why the e is rated only for 4 occupants total (not 5) as the capacity of the car is surprisingly low. 4x100kg occupants I think would put you over the vehicles rated weight. Your range would most likely be affected more on start stop journeys.

I find the cabin heating doesn't use too much over longer journeys. The worst is the initial cabin warmup. Obviously heat loss is worse in colder months so it all varies. Seat and wheel use hardly anything in comparison. Use the sun blind if there is sunshine to add a bit of solar gain to the cabin when parked up. Close it when heating the cabin if its not sunny (to help insulate the interior).

Other gadgets I wouldn't really both to factor into consideration - its unlikely you'd drive without the radio on. Whilst at full pelt I imagine it could draw a couple hundred watts, at normal usage its probably much less. An hour of that is worth a fraction of a mile, half a mile if were being generous (losses for HVDC to 12v conversion etc).

Tyre brand/type will make a big difference, but not as much as moving to the thinner and smaller 16inch tyres.

Only way to tell what it does is to go and do it. Some cars may behave differently to others. Whilst we like to think they are all identical, not all batteries will be the same even though they should be made the same.

Sorry I couldn't give you any scenario benchmark to the 100 you requested, but I rarely have 1 passenger in the car, let alone 3. I find the easiest way to deal with range issues is to simply be ignorant of them. If you need to push the boundaries, just use a different car. That way my life with the E is a relatively happy one.

I'm starting to wonder if the conversation around EVs is so range centric, that the forum will simply die off with almost every post being about range. I realise the first thing people want to do is ask and learn, but I think it will really kill off the forum before too long.
'21 e Advance - Charge Yellow - E1702RR alloys
'17 Civic Sport CVT
'00 Prelude 2.2VTi
Ik2025
Posts: 14
Joined: Sat Aug 31, 2024 4:39 pm

Post by Ik2025 »

What an awesome reply...enjoyed reading that.

I don't even know why I am spending time thinking about it, we've only really done one journey of more than 70 miles in the last year,to a restaurant which had 2 empty charging bays....meanwhile there a Fiat 124 as the other car.

Yes, the only car in the universe with less luggage and niknak space than the e. The 124 makes the e feel like a minibus.

I guess I need to get over my long standing fixation that a 3/4 full tank is 'near empty'. My wife has always been 'if the needle has gone through and beyond the red there's probably another 10miles'.
MaXPainT
Posts: 135
Joined: Wed Feb 16, 2022 6:34 pm

Post by MaXPainT »

My father has the same attitude to the gas tank as your wife. As someone who had to bring him gas after he run out of it in the middle of the road, I don't share that attitude :D If you are so worried about running out of electricity mid-journey, get yourself an Ecoflow delta battery. It won't extend your range by much, but it will give you enough juice to reach a charger. See Tesla Bjorn YouTube channel, he uses it pretty often.
aguamineral
Posts: 3
Joined: Sat Nov 25, 2023 10:43 am

Post by aguamineral »

After doing a few long road trips I have noticed as well that road temperature has an impact as well in range. I have had the best numbers when the highway traffic is a bit dense and temperatures are high (30ºC outside, between 40 and 50ºC road), even if we have to use the AC all the time.
Regarding weight, as EEEE said be careful you are not over the limit. I believe the limit is actually a bit under 400kg.
Ik2025
Posts: 14
Joined: Sat Aug 31, 2024 4:39 pm

Post by Ik2025 »

The weight thing had me interested:

The e:Ny1 has a limit of 347kg and says it seats 5 people (honda site)

Quick google ave weight in UK men 85 women 72.

Is it just me or is this teetering on the edge of misrepresentation?
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