Battery runs out of gas, even when I'm plugged in!

Just started happening yesterday, with speakers taking juice from a USB port and an external drive hooked up via firewire 400: in spite of having my power adaptor plugged into the computer, the battery level just started sinking till the computer turned itself off. Once off, the adaptor turns orange/red (sorry, I'm color blind!) again, and the battery slowly recharges itself.
Anyone ever heard of such a thing? Thanks for any possible help or insight.

Can you supply some more informations?
1. What Model of Macbook have you?
2. How old is it?
3. Do you normally use it with the power supply unit not the battery?
4.Is the 7 cycles the count of the charge cycles?
Item 1 and 2 may tell us if the battery is under warranty.
Item 3, if the computer as been used primarily on the external PSU for a long time then it can affect the battery life.
Item 4, if it is the charge cycle then you have a new machine or item 3 perhaps applies.
Of course you could also have a faulty charger, could you try another one?
Resetting the SMC and PRAM may help, remote possibility but easy enough to try, see Apple support website for instructions for you particular computer.
If in any doubt about the problem, have the computer checked out by Apple or an AASP.

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Message was edited by: mr-anderson
Message was edited by: mr-anderson

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