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Are you sure? A typical phone battery is 5Wh. Let's say it is 5V times 1A times 1h (most of the time the phone does not drain 1A), that's a generous 5W of consu
by bonzini 10y ago
Are you sure? A typical phone battery is 5Wh. Let's say it is 5V times 1A times 1h (most of the time the phone does not drain 1A), that's a generous 5W of consumption for a phone.
A Volt's battery is less than 20 kWh, and it has to last several hours, so it probably consumes around 5 kW.
Now take the phone's 5W a base; Even adding 10W to charge two devices, 10W for the bigger display, and 20W for the speakers, I doubt that electronics and in-car entertainment consumes more than 2-3% (150W) of the overall energy needed by the car.
Air conditioning is much more expensive, and the effect on ICE fuel usage is there but practically impossible to measure.
- Hydraulix989 10y agoTo be clear, I wasn't talking about music, wifi, brightness on the car, I was talking about it on my Thinkpad. I'd only use units of time (hours) to measure a laptop's battery life, I wouldn't use time as a unit for measuring a car's battery capacity. Taking car rides in my buddy's Volt will only get us from SF to Mountain View, and then it will switch to using gasoline. How you accelerate/brake/etc, city vs. highway driving, and following distance from other cars ("drafting") can really affect the range...
- cobookman 10y agoI think you meant bolt not volt.
- bonzini 10y agoI reported numbers for the Volt, but the Volt's battery definitely doesn't last several hours, so the effect is even more negligible.
- cobookman 10y agoI think you meant bolt not volt.