X in Battery and light show... solution

I know a lot of people here have seen the X on the battery icon and others have also seen the "light show" where the power cord flashes green/amber/green/amber. I was having the same situation and while a very few herre have resolved the issue with a Power Management reset and battery recalibration, there are 2 other common causes: A defective battery or a logic board in need of replacement.
If you are seeing the x through your battery and/or the flashing power cord lights.... try this: pick up your macbook with your left hand holding just the front left corner (the corner closest to you, left). Alternately, a very light "twist" of the macbook in opposite directions via the front corners. Does the X on the battery vanish? Does the lightshow change? If so, you should call Apple... the Logic Board most likely needs to be replaced. There must be a component on the board that is loose and the twisting force is enough to cause the battery cut-out.
Apparently, the way to test this for sure (as Apple Support did with me) is to do the following:
1. Remove the battery
2. Plug in the power supply
3. Power up the MacBook
4. When the desktop appears, close the lid
Does the laptop go to sleep? If it doesn't, it needs to go back to Apple for service. In my case, it didn't go to sleep and the technician knew instantly it needed to be repaired... this is after a battery replacement failed to solve the issue. A box arrived the next morning.... I sent the MacBook back... and now I'm waiting to get it back. I dropped it off with DHL last friday.
Hope this helps...

To discard a software issue, reset the SMC > http://support.apple.com/kb/HT3964 Then, try to charge your Mac and see if your battery gets charged.
If it does not change anything, make a backup of your files with Time Machine on an external drive and take the Mac to an Apple Store or reseller. It looks like your battery is not working correctly or the battery connector is damaged, because what I can see is that the battery is not being charged.

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