I have a Kobo Glo, not the HD, the older model, and I don't use it all that much but it's easily the best ereader I have for holding a charge when I'm not using it. I have a few Kindles and the ones I'm not using lose about 10% of their charge per week, maybe 15%. The Kobo Glo loses about 10% every 2 or 3 weeks when I'm not using it. That's with all of them having Wifi turned off while they aren't being used.
However, when I do use it I can't really tell any difference in battery life between it and my Kindles.
Barry
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