09-01-2011 05:50 PM
09-01-2011 06:00 PM
09-02-2011 01:01 PM
Rapid charger does charger faster when the battery is low. once it hits at about 75%, they both charge at the same rate.
I did some testing and posted results here
09-02-2011 01:20 PM
Yes, as I said, "rapid charger for the PlayBook actually chargers only slightly faster than the regular charger". I agree it's faster, but it's not twice as fast unless you're using the tablet at the same time.
For the record:
With the device in standby, the rapid-charging cradle provides about 9.5W from 0% up to about 45%. From there it trails off slowly till it's at 7.5W around 70%, then drops off more quickly as you really get into the upper, non-linear portion of the charging curve.
The regular wall charger provides 7.5W from 0% up to 70%, after which it looks the same as the rapid charger.
Charge time in the mostly linear region up to 60% is proportional to power, so during that time (which is less than half the total charge time) the rapid charger works about 27% faster than the regular wall charger.
The key, as I've noted, is that the wall charger is "maxed out" when charging this much, so basically any use of the tablet will eat into that 7.5W of power. In contrast, the rapid charger has ample extra capacity, so it continues to provide 9.5W power even when you're actvely using the PlayBook.
09-02-2011 09:12 PM
09-02-2011 09:52 PM
09-03-2011 09:56 PM
09-03-2011 11:27 PM
09-04-2011 08:20 PM
09-04-2011 08:56 PM
Also once I found the link, I had a hard time, many touches/pushes to activate it. Finally I managed, rather it 'kicked in'. I guess this is an OS issue.
I believe it must be, as I've never seen any inconsistency in it activating for my touches. I welcome any such problem reports though, so I can perfect it. Thanks for the other feedback too!