I can concur that the KA1 battery lasts only about half as long as the other kobo models, with stock firmware. This is observed on two different KA1 units, (vs multiple H20, H202 and Clara HD)
However, the battery on the KA1 is not that much smaller in capacity, as far as specs go. I suspect that a large part of the KA1 battery life issue has to do with the RGB leds of the first generation Comfort Light. Later iterations of Comfortlight do not use RGB leds, (rather they have red/orange LED's that are only capable of producing the desired colour.) Reading with White light on the KA1 illuminates *all* LED's, the RGB ones being used to produce white light. On later devices, reading with white light would dim out the coloured LED's.
The Forma has a yet again smaller battery, but in practice, I expect reading time per charge to be between the KA1 and the H20, (except for people who read with light completely off)
Last edited by rashkae; 10-27-2018 at 07:37 AM.
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