Re: What's the actual *advantage* of not having an sd slot?

Chris,

It's inefficient and may reduce the life of the battery.

>
OK, it's inefficient.
>
By how much?

>
Not sure. I think I've seen figures of 10%.

[quote]
As expected, Apple's MagSafe charger did relatively well in the 0-100%
charge scenario but as the graph shows, there were some key differences when
compared to our baseline wired test. First off, we can see the power draw
ramps up faster and earlier in the charge process but also ramps down a
little quicker later on. This results in a total energy use of 23.33Wh. That's
a 24.4% increase in energy consumption when compared to our wired test and
represents a 59% loss of energy to charge a 12.7Wh battery.
[/quote]

(Notice the "represents a 59% loss" at the end.  And they have not even
finished)

https://www.ifixit.com/News/94409/wireless-charging-trading-efficiency-for-convenience

Regards,
Rudy Wieser