I just kind of tolerate the Vox's battery life, but I, too, wish it was better. At home, the only way I can keep it from freezing when it comes out of sleep mode is by leaving the wifi on, but that drains the battery even if I'm not using the Vox. So at home if I'm not reading, it's in sleep mode and plugged in. If the weather is stormy and we're facing a power outage, I make sure my Sony PRS650 is fully charged up and I'm sure of my page numbers, because I also have all my books on the Sony as a backup and the Sony can go for a few days. (My Sony's battery life is not what it should be either...probably 3 or 4 days max, but that's still far better than the Vox's.)
We have an outlet in our vehicle that the Vox charger can be plugged into, so for long road trips, the Vox can be plugged in and I can read while it's charging. If I'm away from an outlet, the Vox gets powered completely off when not in use. (Besides, haven't you noticed the device stays a bit warm in sleep mode? Probably not too healthy for it when it's in its cover plus in a handbag.)
I do use the Vox in doctors' office waiting rooms. When I was in a waiting room while a family member was having surgery, though, that's a few hours...The last time that situation happened for me was prior to the first firmware update, and back in the good old days (November of 2011), one could turn off wifi and have it in sleep mode without the device freezing.
When I'm away from home, if the Vox is with me, so is the charger.
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