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Apple Computing Products:
macOS - Notebook Hardware
Battery keeps draining when powered down for days
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<blockquote data-quote="Randy B. Singer" data-source="post: 1948296" data-attributes="member: 190607"><p>This is a used computer with an old battery. You have no idea how it was used...or abused. Is it really so hard to believe that an old battery, possibly subjected to abuse over many years, might not be able to hold a charge? It's easily possible that the previous owner left the laptop sitting with zero charge for months at a time. Or that they left it sitting at 100% charge, always tethered to the charger, for years at a time. (Either will cause lithium to plate onto the anode of the battery, causing a short circuit.)</p><p></p><p>You've likely never seen this type of behavior by a laptop battery before because you've never abused the laptops that you have owned. I'm willing to bet that one of the main reasons that the previous owner sold this laptop was because its battery was done, and he/she didn't want to have to purchase a new one.</p></blockquote><p></p>
[QUOTE="Randy B. Singer, post: 1948296, member: 190607"] This is a used computer with an old battery. You have no idea how it was used...or abused. Is it really so hard to believe that an old battery, possibly subjected to abuse over many years, might not be able to hold a charge? It's easily possible that the previous owner left the laptop sitting with zero charge for months at a time. Or that they left it sitting at 100% charge, always tethered to the charger, for years at a time. (Either will cause lithium to plate onto the anode of the battery, causing a short circuit.) You've likely never seen this type of behavior by a laptop battery before because you've never abused the laptops that you have owned. I'm willing to bet that one of the main reasons that the previous owner sold this laptop was because its battery was done, and he/she didn't want to have to purchase a new one. [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
Battery keeps draining when powered down for days
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