I have a four year old Macbook rev 1,1 (the original Intel Core Duo). Just recently it has begun denying the existence of its battery while still happily running unplugged. I get the X battery icon which claims "No Batteries Available". It is a fairly recent replacement battery and coconutBattery reported it was healthy and holding 90% of its original charge. The MagSafe adapter shows a green light. The battery lights are off, but when I press the button I get 3 of 5 lights.
It will run off the battery, it just won't recognize its existence nor charge it.
Previous to this, I would have to plug and unplug the MagSafe adapter a few times before it would charge the battery, but it would always recognize it.
coconutBattery will now crash with a divide by zero exception.
Things I have tried:
- My battery in another Macbook: it works and charges fine.
- A known good battery in my Macbook: denied.
- A known good power adapter: no effect.
- Resetting the SMC: no effect.
- Resetting the PRAM and NVRAM: no effect.
- Booting from a DVD: no effect.
- Replacing the Battery Connector: no effect.
Anything else I can try? Is there a part I can replace, or is this going to take a logic board replacement?
UPDATE: I pulled the computer apart and saw no black smoke nor Mynocks chewing on the power cables. However, it appears the laptop and the battery are putting their differences behind them. The laptop will now, from time to time, acknowledge the battery and charge it. The first time this happened, it was raining. The second time was next to a bathtub full of water. Extrapolating this curve, I will try throwing my laptop into the river to fix it.
UPDATE 2: I replaced the "Battery Connector w/Sleep Switch" because the laptop had developed narcolepsy. I had hoped this would cure its battery denial, but no dice.