Battery not charging?

Question

My MacBook is not charging properly. Battery status stays in 0% always. If I remove the plug adapter, it is switching off the computer. So as a result, without batter adapter plugged-in, I cannot use my macbook.

I have MacBook 5.1 model, Intel Core 2 Duo 2.4 Mhz, 2GB memory. I tried resetting SMC by following the steps below:

1. If the computer is on, turn it off.
2. Disconnect the AC adapter and remove the computer's battery.
3. Press and hold the power button for 5 seconds and then release the button.
4. Reconnect the battery and AC Adapter.
5. Press the power button to restart the computer

But I don't find any changes in battery charging, still it is with the same issue. Can some one give me some suggestions if you came across this?

Answer 1

I would assume that either charging circuitry has failed or battery is dead. Easiest way to diagnose which one is to find same battery (friend with same battery model) and put it in your computer.

If you cannot change that battery, than charging circuit is culprit here. For that you will need to take your Mac for repairs. If another battery works, just order replacement.

Answer 2

Before you go getting anything replaced on your Mac, try another charger. I have had this occur on two different Mac laptops, an iBook G4 and a new 13" MacBook Pro, and both times it was a faulty charger (charger will power system, but won't charge battery), rather than the battery or system power circuitry.

If no one you know has a charger, take it to an Apple store and try it out there.

Edit: I've also seen this problem occur more frequently with off-brand chargers.