I'm not sure if this is a battery issue or a power cord trouble. I just had the mother board replaced and when I brought my laptop home the battery light will blink slow for a few seconds then rapid for a few seconds and then it will shut off. I have been able to boot the computer twice myself since bringing it home, a third time it was booted when I brought it back to Fry's last night and they couldn't replicate the problem. While they had it in for repair they replaced the power cord also.
I have the same issue. With AC adapter in or out the battery light blinks amber 2 times for 1 sec each and then 26 times very fast. It is always 2 long followed by 26 short amber flashes. I feel like this is a diagnostic code that is trying to tell me something. I'm not interested in buying replacement battery or AC adapter if that is not the problem.