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Originally Posted by ThomasC
I have 2x DXG's (with 2.5.8 firmware) and neither goes into critical battery level after 1 week. This would happen only if I left the 3G = on. With it turned off it lasts a long time.
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Exactly. Currently I'm in a cycle where I used the DXG (I suppose that means Kindle DX / Free 3G) last Friday a lot, like 6 hours, two days of standby Sat/Sun, plus I've used it Mon-Thu this week for 2-3 hours per day – and it's still at ~50%. — No noticeable drain during standby; that is
after rebooting that thing after the last use of 3G.
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My older backup DXG retains ~80% charge when left unused for 1.5 months. I just top it off every couple of months.
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That's certainly what one would expect, and what I receive from my Kindle 3 (3G/WiFi) with wireless turned off.
All I can say is: My experience is that (at least on my DXG) the 3G mobile won't fall back into powerless hibernation when being turned off – but only by a manual reboot.
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One thing I have found that saves a little battery power is to go to the aa font menu and switch the bottom screen orientation from auto (where it goes to after a restart btw) to upright (or whatever you like). This disables the built in screen sensor and may result in a little power saving.
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I figured that, too. It totally makes sense that when silently reading a page, the activated sensor will still check the orientation at least once a second to do its magic. Certainly no big deal on a phone with an illuminated screen, but useless power consumption on an e-ink device that sits on a reading desk.
I'd love to turn this off permanently, but it's always back on after a reboot.