jingo

Hopefully this will resolve the issue with charging in my 2021 VW Golf? It has never worked since the car was new - you get a message saying "Currently unable to charge the mobile device. Please remove all other items from the mobile phone tray." Needless to say there are no other items in the tray.

In addition when you pick up the phone it has changed to the Wallet and appears to be waiting for a payment to be made.

Because the car is yet to have its first service I have not asked whether there may be a software upgrade to one of the vast number of different electronic modules in modern cars (particularly the Mk 8 Golf, seemingly). But it may be that iOS 17.2 will finally address this issue?

This either proves that doing this stuff right isn’t easy, or that doing it wrong is. Either way it’s a very good reason to stay with Apple.

I agree that the article is a bit confusing.

W is a unit of power which does have a time or rate component, while W/hr is used for energy - either consumption as in how much energy your house or EV is using, or capacity, as in how much energy your battery can deliver.

BTW, most EVs now can go about 4 miles/kWh, so 14 mi is possible on 3.5kWh.

Voltage (V) all by itself is not an indication of power. Sometimes it is called "potential" because it is not until current (amperage or "A") flows that power is delivered. A higher voltage has a higher "potential" for power at any given current. This is basic Ohms law, where W=V*A 

OK, thanks for the corrections on the strict definitions of the terms, but presumably you agree with the heft of my post?

And thanks for the correction regarding the EV efficiency - I got that the wrong way round.

I really don't want to be mean, but personally I think a journalist should understand enough about what he is writing so that it makes sense.

This is one paragraph that particularly demonstrates the lack of understanding:

"The Advanced Kit expands the kWh from 702 to 21.6. The battery holds 7,200W and can output up to 240V of power. This energy will give you up to one week of administrated power to your home."

(1) "the kWh (is expanded) from 702 to 21.6". Really? Anyone can see that 21.6 is not an expansion of 702.

(2) The battery holds 7,200W and can output up to 240V of power. 7,200W is not a capacity, it is a rate of consumption. Capacity is expressed in kWh, rate of consumption in kW. It's not completely wrong to say that 240v is a measure of power, but it's not strictly correct either. My guess from reading the article is that the capacity of one unit (not the "advanced kit") is 3,600Wh (3.6kWh) which is pretty weedy but would probably power a car for up to about one mile of use (at 3.5kWh/mile, say) disregarding any electrical losses.

(3) "up to one week of administrated power" What does this mean? The length of time until the unit discharges is dependant on how fast the power is consumed. It might mean that its self-discharge rate is so high that after a week of it sitting there, whether used or not, the stored energy has all discharged. This statement needs to be explained.

There are plenty of other unanswered questions here. Either the journalist needs to understand the subject better, or it needs to be edited by someone who does.

That’s all very well, but I personally don’t subscribe to Apple Music for a host of reasons that are valid to me. I am not alone n this although the article pretty much assumes that all its readers do subscribe.

Spatial Audio has the potential to change that, but I am not aware of any way to try it without subscribing to Apple Music. Catch 22.

if there is a way then this article should cover it. In the meantime I will continue to be ignorant of the strength of its claimed virtues.