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Originally Posted by Ricky D'Angelo
My used Sony PRS-350 has held a charge so far for a couple of weeks so the battery seems to be good. On the other hand, the two used kobo wireless ereader's batteries haved drained after less than a week. Since I've paid less than ten dollars each for the kobos I can't complain but it makes me think if the kobo's batteries are inferior to sony's batteries.
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I'm not sure, but I don't think the Kobo Wireless readers had a very long battery life, even new. I know mine drain fairly quickly also.
According to this article, the Kobo Wireless' battery was only rated for 10 days.
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Beyond the new display--which is still 800-by-600-pixel resolution but is now 16-grayscale, putting it in line with the competition--the specs remain largely familiar. The unit can read DRM ePub, Adobe Digital Editions, and PDFs (though the PDF handling remains weak, relying on pan-and-zoom to get around). You can put content on the reader via the SD Card, through USB transfer (a mini-USB port is on the bottom of the device), by shopping on the Website, or by shopping on the device itself. The inclusion of Wi-Fi puts a damper on the battery life, though: This model is rated for only 10 days of battery life, versus two weeks for the original Kobo and the Sony Reader, and one month for the Amazon Kindle.
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https://www.pcworld.com/article/2132...s_ereader.html
I think you're right about Kobo's batteries being inferior to Sony's. Actually I think Sony's batteries are superior to all others – at least from their "era."