I had a similar issue with a slightly newer Dell Latitude, except it would constantly show 5% battery and would refuse to charge regardless if whether the laptop was powered on, sleeping, or completely off. The charging LED would light up for only 2 seconds, and that would be it. Interestingly, even though this wasn't a Dell battery, BIOS did not mention anything about a non-genuine battery being installed. Tricks mentioned here didn't help.
What I attempted was a risky maneuver, but it worked. I swapped the battery back to the old Dell one, powered the laptop into the BIOS, went to the battery information section and plugged in the charger. Then, ***without powering off the laptop***, I swapped the battery back to the new one, and it immediately started charging. I went through a full charging cycle, from 100% to low battery power-off event in Windows, then back up to 100%, and everything seems to be working well!
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***Of course I should underline it again that ''this is a risky, dangerous maneuver that carries a real risk of damaging you and/or your hardware if you're not careful''.*** Just keep your fingers far from the PCB and the battery socket, and you should be fine. 👍
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***Of course I should underline it again that ''this is a risky, dangerous maneuver that carries a real risk of damaging you and/or your hardware if you're not careful''.*** Just keep your fingers and your metal tools far from the PCB and the battery socket, and you should be fine. 👍
I had a similar issue with a slightly newer Dell Latitude, except it would constantly show 5% battery and would refuse to charge regardless if whether the laptop was powered on, sleeping, or completely off. The charging LED would light up for only 2 seconds, and that would be it. Interestingly, even though this wasn't a Dell battery, BIOS did not mention anything about a non-genuine battery being installed. Tricks mentioned here didn't help.
What I attempted was a risky maneuver, but it worked. I swapped the battery back to the old Dell one, powered the laptop into the BIOS, went to the battery information section and plugged in the charger. Then, ***without powering off the laptop***, I swapped the battery back to the new one, and it immediately started charging. I went through a full charging cycle, from 100% to low battery power-off event in Windows, then back up to 100%, and everything seems to be working well!
***Of course I should underline it again that ''this is a risky, dangerous maneuver that carries a real risk of damaging you and/or your hardware if you're not careful''.*** Just keep your fingers far from the PCB and the battery socket, and you should be fine. 👍