Quote:
Originally Posted by leftright
I don't understand why kobo doesn't display the battery state during sleep mode and power off mode when the unit isn't plugged in
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Lithium-ion batteries have a low self-discharge rate (<10%/month, often less) so that I think the best is to do nothing to help discharging them in power off mode. Theoretically, a powered-off freshly recharged Kobo should be able to stay unused for one year without getting the battery out of service by a total discharge.