C840 Second Battery Not Recognized

Question

I just got 2 new batteries for my C840 and the battery bay (battery 2) is recognized and charging but the second batter that was placed in the modular bay where I removed my floppy (battery 1) is not recognized.  I have the latest A13 bios, is there something else I'm missing, what do I need to do so that it recognizes the second battery?

ejn63 · Answer

What if you swap the batteries - does that bay then recognize the battery?

Jim in NC · Answer

This is how I corrected the 'battery not recognized' problem with my Dell Latitude CPi laptop......   1. Jumped up and down 3 times 2. Screamed at the computer for 5 minutes. 3. Ordered, received and installed a replacement battery -which did not work! 4. Screamed at the battery supplier - who sent a replacement battery - which did not work! 5. Checked the Dell web site for help - which did not work! 6. Updated my BIOS and Jumped up and down 4 times while holding my left foot in the air. 7. Turned the laptop over and tightened all of the phillips head screws that I could see.   My battery is recognized and it works and it is charging.... and I am happy!!!!!!   Just one additional note, I think that you can skip the first 6 steps that I listed above. The philips head screw in the center of the bottom (under the spacebar) is a ground for the motherboard.... and when not making contact, does not allow the battery to be recognized, charged or power the laptop......   Sad!   I discarded my other battery - and I now believe that it was fine.  I recommend that Dell apply Loctite to the screws in their laptops!!

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C840 Second Battery Not Recognized

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