Quote:
Originally Posted by Alan_S
I have two kobos, they don't have linear battery readings, also each device can with time change a bit their battery readings (even on new devices as Forma must be pretty new device).
You can try with some deep cycles (don't charge it till it goes almost empty). But, also, depending on device, there are sudden drops with battery percentage.
My H2O usually shows longer upper battery percentage, with sudden drops as it goes lower (below 40% I know I need to start charging, or I could found empty battery). My K1A is more even, but with few drops (10-15% is "lost"), first is around 55%, next about 40%, after that it goes more or less "stable".
But, this is just battery percentage as number you see, not actual battery percentage, you have still more or less battery capacity (unless you don't*), e.g. on my K1A when I go deep cycle I can read for hours on 0% and I mean hours.
*It is possible that something goes really wrong with battery, that it really loses capacity. If you try deep cycles and see how long you can read, this is only real way to test actual capacity, battery percentage as shown is almost always wrong and serves just as an orientation idea.
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I think it's more than just percentage reporting. I just took it to read before bed and it wouldn't wake up. I plugged it in and it woke up with the battery at 47%. Just sitting idle (wifi off) all day. Meanwhile the h2o2 that I haven't touched in a week or so is as fine as ever (I never had to even think about its battery level.)
I'll be in touch with the seller and/or kobo.