msandeep
Member
Curious - why does the Miles Per KWH change from summer to winter? I thought this metric was independent of the battery state. Is it due to heating/cooling?
msandeep said:Curious - why does the Miles Per KWH change from summer to winter? I thought this metric was independent of the battery state. Is it due to heating/cooling?
As does the heater. This was esp. true of the power hungry resistive heater in the '11 and '12 Leafs. I'm not clear if the '13 Leaf S' resistive heater is more efficient but the hybrid heater in the '13+ SV and SL helps for many folks.hjaime said:Air conditioning eats up battery
cwerdna said:msandeep said:Curious - why does the Miles Per KWH change from summer to winter? I thought this metric was independent of the battery state. Is it due to heating/cooling?As does the heater. This was esp. true of the power hungry resistive heater in the '11 and '12 Leafs. I'm not clear if the '13 Leaf S' resistive heater is more efficient but the hybrid heater in the '13+ SV and SL helps for many folks.hjaime said:Air conditioning eats up battery
Also, during winter, there's more likely to be rain, slush or snow, which increases rolling friction, thus reducing efficiency further.
At lower speeds, air density has very little effect on energy consumption.tivollix said:The main reason is that air density increase when as temperature decrease.
RegGuheert said:At lower speeds, air density has very little effect on energy consumption.tivollix said:The main reason is that air density increase when as temperature decrease.
OTOH, when it is 10F outside, the heater might consume as much electricity as the drivetrain. This is particularly true at lower speeds, and is not influenced by the presence of a heatpump at such low temperatures.
Not all LEAFs have heated seats.tivollix said:...
Sure a 6KW heater is using 6KW when it is 10F outside, that why we have heated seats that use 50W instead...
TimLee said:Not all LEAFs have heated seats.tivollix said:...
Sure a 6KW heater is using 6KW when it is 10F outside, that why we have heated seats that use 50W instead...
And many people don't like the car cabin at 10F, even if they have heated seats.
The most significant factor on winter efficiency is heat.
Second most is snow / rain.
Air density is a much less significant factor.
From the Battery Aging Model:bowthom said:Hello,
I lost the first batt capacity bar today.
Manufactured - 11/10
Delivered - 2/23/11
P3227 update - 10/2/13
Location - Portland OR
Miles/kwh - 4.2
Odometer - 37514
Capacity - 55.45
Date - 11/6/14
Parked outside
tivollix said:Your are pretty sure of your affirmation but we agree on the factors. Case closed.
Not everybody is using the car the same way and it is fine.
In my case I am not using much the heater when driving to preserve range.
But what do I know, Quebec is not that cold
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