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Loss of Miles of 80% Charge

1181 Views 2 Replies 3 Participants Last post by  rmdennis
So first time on a super long road trip.

San Francisco to Portland, and then later, in a few hours, Portland to Vancouver.

Charged about 5 times with the Electrify America 350 Kw charger.

My first time to use that coz near my place we only have the 150 kw.

i noticed on my last 2 charges; the usual 210-220 miles I would get when I charge up to 80% now dropped to 190 and 179 miles respectively.

im freaking out as I still have a lot of driving to do going up to Vancouver then back to SF next week.

i have a few suspicions:

1. could it be the 350 kw charger ? I just noticed on the Kia app the recommended chargers are only level 1 & 2. Isn’t the 350 kw a level 3?

2. i always charge with the car and air conditioner on. Today the2nd to the lastcharge it was cold outside and the heater was on a bit, could it be that?

3. also I went up the mountains of Portland with lots of zig zags, could that be it too? Using more power for less miles hence the car estimation of miles adjusted down?

4. or was the car simply just overused? We left SF around 6pm (but was driving around for errands since 3pm) and got to Portland at 8am the next day

We only had one relatively long stop for dinner. Otherwise stops were for charging.
Hope this goes away on its own later after the car gets to rest for about 6 hours or so.
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1. could it be the 350 kw charger ? I just noticed on the Kia app the recommended chargers are only level 1 & 2. Isn’t the 350 kw a level 3?

Nope. Shouldn't matter how you get up to that 80% charge.

2. i always charge with the car and air conditioner on. Today the2nd to the lastcharge it was cold outside and the heater was on a bit, could it be that?

Both heat and AC can reduce range. Based on my experience with my leased Honda Clarity EV, heater can definitely severely impact driving range more so than the AC. I'd typically just turn on heated seats rather than blasting the heater on in order to maintain range.

3. also I went up the mountains of Portland with lots of zig zags, could that be it too? Using more power for less miles hence the car estimation of miles adjusted down?

Elevation climbs can also definitely hurt range, but usually on the return trip, you'll be able to gain that range back by charging the car going down hill... Zig zags typically will cause you to slow down, the slowing down part will all regen to recover energy, so I don't think zig zags hurt EV ranges all that much. Typically stop and go traffic will only serve to increase EV ranges. It's maintaining a constant fwy speed, especially going uphill that kills EV ranges.

4. or was the car simply just overused? We left SF around 6pm (but was driving around for errands since 3pm) and got to Portland at 8am the next day
Li-ion batteries maintain their charges well. If you left the car parked for weeks or months, maybe you could lose a small amount of charge over long period of time. I don't think anyone could possibly overuse an EV. Local errands should be better for EVs. It's the extended high speeds, elevation climbs, extreme temperatures that end up killing range.

On my previous leased 2017 Honda Clarity EV, max range was only about 90 miles. (Which was good enough for my daily commute) On near triple digit hot days after being fully charged, range estimator was telling me that I'm only good for 50miles!!! But I could easily go more than that. Some times the range estimator just isn't very accurate.
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Driving on the highway at speeds over 65 mph will reduce your range. We have taken a few long trips from Northern CA to Southern CA with our EV6. Lots of freeway driving (70 mph). The range dropped from 275 full charge (our usual local driving) to around 230 full charge during the trip. The range is a constantly changing variable depending on lots of factors. You can see it in real time by looking at the miles per kwh gauge on the dash display.
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