MacBook Pro Dies when power disconnected.

[WetcoastBob]

My MacB00k Pro powers down immediately when I remover the power plug. If I put it to sleep and then disconnect the power cord it remains in sleep mode. The second I open the lid it starts to wake up and then dies.
This is an early MBP (18 mo. old) with a battery replacement on guarantee as part of the overheating-battery recall August ‘06.
When I last used it with a battery (3 days ago) it ran for 1 3/4 hrs on a charge. The battery charges to 98-100%. The battery is now at 98%. (was at 100 before I unplugged the power) CocoanutBattery says - current charge: 3563 mAh, maximum battery charge 3623 mAh.
Current battery capacity: 3623 mAh, original battery capacity: 5500 mAh so current capacity is 65% which figures with my last session using the battery. Battery-loadcycles is 14 and the MBP registers that it is charging.
Do I need a new battery or is there something else wrong?

Cheers:
Bob

 

[flopticalcube]

Sounds like a flakey battery. Try resetting the SMC.

 

[WetcoastBob]

Guess What?

So after posting this I got an idea and pulled the plug of the charger out of the wall. Guess what? No shut-down. It just started to work with the battery. I then pulled the Magsafe plug out and it continued to work just fine on the battery.
So now I check with CoconutBattery--
Current Battery Charge: 4317
Max…… 4531
Current Capacity: 4531
Original….. 5500
82%
Loadcycles still 450

Does anyone have any ideas?
Cheers:
Bob

 

[ale500]

your loadcycles where not 14 ?...

Something is wrong with that battery... it is detected just before you pull the plug and it shuts down ?...

 

[WetcoastBob]

Typo

In my first post the battery load cycles should read 450. (Four hundred fifty). Since the second posting I have shut the MBP down and disconnected the power supply as I was leaving home and I never leave a charger charging when I am away. Six hours later I try to power up using only the battery.... Nothing. I have performed an SMC reset but it has made no difference. Once powered up with the charger plugged in I still have 99% (4506 mAh) charge. Pull the plug and she dies!
Cheers:
Bob

 

[cmoone]

Did you ever get this resolved? Mine was doing this until today--I found this thread, followed the link to reset the SMC, pulled out my macbook pro, and lo and behold--it suddenly worked fine (before I even tried the reset).

I was curious, though, in case it starts up again. I'm about to travel overseas, and I don't want it to freak out again while I'm gone...