I've just been reading on my 5 year old KA1, after it has been inactive for quite some time. (Reading is just one of my many hobbies, and sometimes one or the other doesn't get a lot of attention for some time.)
It seems the battery dropped 10% in around 50 minutes of reading. (Light is at 15-20%). This means it'll only hold a charge for 500 minutes, which is 8.5 hours. That's not very long... and as far as I know, I can't replace the battery in the KA1. Neither can this be done in any other newer Koob.
I wonder if there are readers that still have replaceable batteries.
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