piquadrat

Joined 15 years ago

Karma
1,367
Submissions
171
Member since
Jul 22
my public key: https://keybase.io/piquadrat; my proof: https://keybase.io/piquadrat/sigs/qfiCftm7qtES60c4baiheIFZh31t1XYJSbZQ9e8_RxU
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Recent submissions

Comment · 3 months ago
Your Polestar 2 battery is based on battery technology that is 5+ years old. Right now you can buy a BYD car in China that charges at up to 1500kW - close to 10x the peak charging rate of a Polestar 2.
Comment · 8 months ago
Comment · 11 months ago
Comment · 1 year ago
Comment · 2 years ago
My source is an article from the ADAC, a German automobile association.

https://www.adac.de/rund-ums-fahrzeug/elektromobilitaet/lade...

They say 100-300W for the onboard electronics, and 15-25% total loss when using a wall socket (other losers contribute as well, e.g. cables that weren't originally meant to run at peak current for hours on time).

Comment · 2 years ago
One drawback of charging on an 120v (or 230v) outlet is efficiency. While charging, the energy consumption of an electric car can easily reach 300-400 watts. When you're only charging with 1800-2400 watts, that's a sizeable amount of energy that never reaches the battery.

With a dedicated level 2 charger, you can charge with 10+ kW, making the percentage that is lost in the electronics of the vehicle much smaller.

Comment · 2 years ago
Comment · 3 years ago
Comment · 4 years ago
I wish Google Maps had an option to avoid small roads that are not made for transit traffic. I live next to such a road, and the amount of cars using it has grown considerably over the last few years, many with license plates from neighboring regions. Taking this narrow road saves them maybe two minutes compared with an adjacent, much wider road.
Comment · 4 years ago
The problem is more that the Swiss Plateau (where most of these tunnels would be built) is very densely populated. There's just not enough room for a whole new road network to be built on the surface.
Comment · 4 years ago
Comment · 4 years ago
Yes, I unplugged it.
Comment · 4 years ago
Just yesterday I noticed that a device installed by the cable TV company in my house (a WISI VX 2030 amplifier, according to the sticker) was warm to the touch. Measuring its power consumption, it uses a constant 15 watt, so about 130kwh/year.

I don't use cable.

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