05-18-2020, 07:05 PM | #1 |
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Kobo Libra H2O battery drain?
Hi,
I decided to try to charge my battery when it's at around 20% and charge it until it's around 80%. I've read that it's best for a li-ion battery to do it this way, so it could theoretically last up to 1,500 cycles. I've noticed something strange when doing this (I only did it twice so far). I charge it to about 80%, then get it off the USB plug, and let there on sleep. A couple of hours later, when going back to read, last time I saw battery back to 64% (16% lost with no reason) and today it was back to 54% (26% lost!). I wonder what could explain such a situation and if I am doing anything bad. Thanks! |
05-19-2020, 01:00 PM | #2 |
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Anyone?
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05-21-2020, 02:31 AM | #3 |
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if u're using sleep cover, chances are the cover is not closed properly
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05-21-2020, 11:20 AM | #4 | |
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Quote:
Did the thing again (but was reading, so different a bit). This time I waited until 92%, then read for about 2 hours and was back to 60% or so. Strange. Am I the only one charging from 20% to 80% or so instead of waiting until 100%? |
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05-21-2020, 11:41 AM | #5 |
Wizard
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Battery percentage is guesstimate at best. Li-ion battaery voltage does not drop linear to the charge left. You will have to periodically let it get a good full charge so the battery meter has a baseline to work with.
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05-21-2020, 08:09 PM | #6 | ||
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Quote:
And here's the thing, what exactly are you saving the battery life for? From reports here, and my experience, the battery is lasting long enough to get to the point replacing the device is attractive. Quote:
I'm also not sure about the report. It dropped from about 80% to 64% with the cover closed over a couple of hours. Then it dropped to 54% over the next how long? The "today" doesn't tell me how long between looking at the battery level other than implying at least a day. Plus, there appears to have been some reading. That will have used power, depending on how long, what and how fast a reader you are. So, I can't judge if that is bad or not. The battery usage depends on a lot of things. And has been discussed a lot. There have been a few recent threads that you can refer to. But, it depends on things like was WiFi on, the light level, any syncs done, what sort of things you read, how fast you turn the page, what else the device was doing. There are issues triggered by badly constructed books that can cause high battery usage even after closing the book. To be able to diagnose, we need more details. Have a look at the other threads for some ideas. |
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05-22-2020, 06:46 AM | #7 |
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05-22-2020, 06:57 AM | #8 | ||
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Quote:
I read with backlight on from 70 to 95% all the time, because it hurts my eyes if it is too dark. That way, I rarely get more than 10-15 hours of reading, and since I read A LOT, it's not much more than 3 days without a charge. So if I could triple the number of cycles, that would be nice, because as it is, in a year or so I could have to charge it every two days, etc. and then it would go South fast... Quote:
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