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On Thursday, 15 September 2022 18:10:39 BST Laurence Perkins wrote: |
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> Note that most batteries these days in anything more complex than a watch |
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> have "smart" charge controllers and so upower or similar can read what |
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> their design watt-hours and current maximum capacity are. Also, often the |
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> total charge or discharge rate. That plus a little math should tell you if |
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> it's an aging battery or if your machine is simply failing to idle down for |
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> some reason. |
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> LMP |
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Larger capacity batteries have multiple banks in them connected in parallel. |
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Some times one of the banks or its controller(?) fails and while the rest |
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continue to work, the loss in capacity is a noticeable step change. I recall |
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suddenly losing ~1/3 of the battery capacity on a laptop just 3 or so happy |
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years into its life. The remaining of the battery capacity continued to |
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degrade slowly and gradually over many years. So notwithstanding the high |
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consumption identified by the OP the software causes of which should be |
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investigated, there could be also a problem with the battery unit itself. |
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BTW, short & frequent top ups of lithium-ion batteries is the best approach to |
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their charging, while deep discharge can guarantee a shorter effective life. |
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