iPad battery losing charge while plugged in AND in use
I got my ipad opening day. By the end of the day, I noticed that even though I had the ipad plugged into the supplied charger with supplied cable, the battery was slowing draining at a rate of approximately 5% every hour. So I called apple care and they decided to send me a new replacement. However, the behavior is the same with this iPad. We own two of them, so I did try the power adapter and cable from the second ipad and again, the behavior is the same. I would like to see if anyone else notices this with their iPad if they could at least give it a try:
1) Fire up bluetooth and WiFi, plug in the supplied cable and charger.
2) Crank up the brightness.
3) Run an app that is demanding on the device. I love drum apps and will drum along with my macpro playing iTunes on the MacPro and listening to the iPad via GarageBand so that it plays on the nice set of speakers.
I believe just web browsing or playing games will give the same results. Notice that over time, your battery % actually drops and doesn't increase or stay the same while charging and engaging in these activities.
Granted, the rate of decline is lower than if the charger were not connected, but it is a decline none the less.
The result is that eventually the iPad is useless until it is left alone to charge. I would have hoped the device would be able to maintain a charge while in use and plugged into the wall charger.
My theory is: The iPad either:
A) Will not demand any more current than it was programmed to demand, therefore if your usage is demanding more current drain than it is programmed to demand from the charger, the net result will be a decline in charge.
B) The charger can only supply 2.1 amps of 5 volt current when in reality, the iPad needs 2.5 amps while being placed under this level of demand. I arbitrarily picked 2.5 but it could be 3 amps ... who knows.
Either way, I have learned that if I want to use my iPad for an entire day while leaving it plugged into the supplied charger and cable, I can wish in one hand and spit in the other and the spit will always win. 😉
Im curious to hear what others have to say about this since I have been reading through the forums and I haven't seen anyone specifically complain about this issue.
Thank you,
Mike
1) Fire up bluetooth and WiFi, plug in the supplied cable and charger.
2) Crank up the brightness.
3) Run an app that is demanding on the device. I love drum apps and will drum along with my macpro playing iTunes on the MacPro and listening to the iPad via GarageBand so that it plays on the nice set of speakers.
I believe just web browsing or playing games will give the same results. Notice that over time, your battery % actually drops and doesn't increase or stay the same while charging and engaging in these activities.
Granted, the rate of decline is lower than if the charger were not connected, but it is a decline none the less.
The result is that eventually the iPad is useless until it is left alone to charge. I would have hoped the device would be able to maintain a charge while in use and plugged into the wall charger.
My theory is: The iPad either:
A) Will not demand any more current than it was programmed to demand, therefore if your usage is demanding more current drain than it is programmed to demand from the charger, the net result will be a decline in charge.
B) The charger can only supply 2.1 amps of 5 volt current when in reality, the iPad needs 2.5 amps while being placed under this level of demand. I arbitrarily picked 2.5 but it could be 3 amps ... who knows.
Either way, I have learned that if I want to use my iPad for an entire day while leaving it plugged into the supplied charger and cable, I can wish in one hand and spit in the other and the spit will always win. 😉
Im curious to hear what others have to say about this since I have been reading through the forums and I haven't seen anyone specifically complain about this issue.
Thank you,
Mike
MacPro Late 2008, Mac OS X (10.6.3), Dual Quad Core 2.8 Xeon / 24 gigs RAM / 10 TB Storage / SSD Boot
