Quote:
Originally Posted by pwalker8
Yep. The question is how long does it take to go from dead to usable for an hour or so.
I didn't know that the kindles wouldn't power down, still I should be able to remember to pull it out, charge it, sync any new books then put it back in the car. It's just a case of getting into the habit of doing it at a given time each week. I'm pretty sure it will last a week in stand by without too much battery drainage, especially if I leave it in airplane mode.
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I used to keep an emergency cellphone in the car for my dad since he tends to be forgetful. One of those $10-15 pay-as-you-go prepaid kits. It was always left on (around 3-4 weeks standby time?) so that way, it would always be reachable (or at least that was the idea). We have dual-port car chargers but even then, the device rarely had a charge when needed.
I also keep backup Paperwhites and I've often enough encountered situations where I wanted to use my backup for something or other and battery was dead. This is why I searched for a way to completely power down Kindles. I'm guessing due to the smaller battery (perhaps dual-core processor, too), the Oasis wouldn't have as long a standby time as the lower end Kindles.
If I were you, I'd keep books on either Dropbox (it's more widely supported compared to other cloud storage solutions) or an always-on, internet-facing Calibre content server for book loading. Then for the backup reader either a Kobo, jailbreakable Kindle, Fire HD tablet or iPad (can often get basic model for $249, same price as Oasis 2). Tether device to phone and download books from Dropbox or Calibre server. Keep devices powered down unless needed.
By the way, the biggest power drain on the iPad is the display. If you're just gonna keep it on standby, it actually lasts several weeks or more thanks to the *huge* battery. iPad (2018) ~30Wh, iPad Pro 12.9 (2015/2017) ~40Wh.