Title: I&#x27;m curious about how everyone stores old smartphones and other lithium-ion battery-dependent devices while preserving battery life.  Especially when they might want the device to keep working over several years.<p>I&#x27;ve tried charging my backup devices to 50% and storing them in a cool, dry place, but I often forget to do so, resulting in a drained battery by the time I recharge them. I am worried this might be affecting the battery&#x27;s longevity.<p>Does anyone have a better method, such as an automated charging system, for managing this?
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