The charge control ckt is internal to the computer. The battery report appears to indicate the battery is fully charged. Therefore, the internal circuit is likely improperly reporting that the battery is low.
Per this service manual, https://dl.dell.com/topicspdf/inspiron-15-7591-laptop_service-manual_en-us.pdf
it appears that circuit is on the MB. If so, it is probably an uneconomical fix.
This is a block diagram of a typical charge control ckt. https://www.youtube.com/watch?v=W-Yy2BS7Ud8
The battery low comes via SIO. The input is from the battery. I assume that is working as 3 batteries can't be bad.
Therefore, the SIO must not be functioning.
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Maybe you can run a diagnostic that will test the SIO.
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Maybe you can run a diagnostic that will test the SIO. That will verify or not my conclusion.
The charge control ckt is internal to the computer. The battery report appears to indicate the battery is fully charged. Therefore, the internal circuit is likely improperly reporting that the battery is low.
Per this service manual, https://dl.dell.com/topicspdf/inspiron-15-7591-laptop_service-manual_en-us.pdf
it appears that circuit is on the MB. If so, it is probably an uneconomical fix.
This is a block diagram of a typical charge control ckt. https://www.youtube.com/watch?v=W-Yy2BS7Ud8
The battery low comes via SIO. The input is from the battery. I assume that is working as 3 batteries can't be bad.
Therefore, the SIO must not be functioning.
Maybe you can run a diagnostic that will test the SIO.