1947 Views 5 Replies Latest reply: Dec 27, 2010 9:07 PM by louie
My first thought is that the replacement battery is simply bad. I would be suspicious of claims of 25% increase at a low price. Have you contacted the vendor about warranty or tech support?
Can you try the behavior on the old battery? Did you reset the PRAM? What is the battery info in System Profiler/power?
Fair enough! Regardless of the cost, you probably just have a bad battery. Sudden drops in capacity are typical of a bad cell in the pack.
-Try the old battery and see if it behaves erratically. If not, the computer is probably OK.
-Reset the power management unit and PRAM, just in case the computer has be reset for the different battery:
-Ask your battery vendor for tech advice on this issue or warranty service.
The battery is a NewerTech from OWC. The tech there had suggested - first, a PMU reset and, if not resolved, an nvram reset. If that didn't do it, I should call Customer Support for an RMA.
I did a PMU reset and it seems to have done the trick - afterward, I ran CD's on the machine (something I don't normally do!) constantly for well over 4 hours. Airport was also on and I was connected to the internet! My old Apple battery would never have gone anywhere near that long with that or any other load. The battery indicator went down gradually until it shut down at 0%.
It's only one cycle and I will be watching it closely but looks good for now.