Battery life displayed as 0%

When the button on the battery is pressed it shows 3 green lights but the battery life is still displayed as 0% on my macbook.
This is my 3rd battery. The second was given to me while my macbook was under warranty. When this one decided to go out I used it until it ran out of juice. Then I pressed the power button hoping that it'd come back on just long enough to transfer a file (hey, it could happen). Instead the screen flashed white and that's the last I saw my macbook respond to this battery.
This happened some time early spring and I have been using it on AC power only since then. Classes are starting tomorrow so I would like to have it run off of battery again.
Battery Information:
Model Information:
Serial Number:
Manufacturer: DP
Device name: ASMB013
Pack Lot Code: 0001
PCB Lot Code: 0000
Firmware Version: 0102
Hardware Revision: 0300
Cell Revision: 0100
Charge Information:
Charge remaining (mAh): 0
Fully charged: No
Charging: No
Full charge capacity (mAh): 0
Health Information:
Cycle count: 26
Condition: Check battery
Battery Installed: Yes
Amperage (mA): 0
Voltage (mV): 11440
System Power Settings:
AC Power:
System Sleep Timer (Minutes): 0
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 30
Automatic Restart On Power Loss: No
Wake On AC Change: No
Wake On Clamshell Open: Yes
Wake On LAN: Yes
Display Sleep Uses Dim: No
Battery Power:
System Sleep Timer (Minutes): 25
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 2
Wake On AC Change: No
Wake On Clamshell Open: Yes
Display Sleep Uses Dim: Yes
Reduce Brightness: Yes
Hardware Configuration:
UPS Installed: No
AC Charger Information:
Connected: Yes
Charging: No

The battery has been sitting for several months but it shows that it is not empty.
(when I press the button on it, the lights turn on.)
The battery given to me after the first one died was "refurbished" and didn't last me too long until after the warranty ran out; about 3-4 months. This one I am currently using I bought off a third party web site. It only lasted about a month.
The computer itself was purchased 3 years ago last month.

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a month later i bought it, i started having issues with screen. the screen started flickering/flashing randomly. i got the display replaced last week i think, but the screen is still having issues and battery life got even worse! now it lasts 1hour 45 minutes(screen brightness set at 50%) and i'm only browsing the web...
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Sample code:
REPORT ZALV_POPUP_TO_SELECT.
TYPE-POOLS: SLIS.
DATA: GT_OUTTAB TYPE PA0008 OCCURS 0,
      GS_PRIVATE TYPE SLIS_DATA_CALLER_EXIT,
      GS_SELFIELD TYPE SLIS_SELFIELD,
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Battery life displayed as 0%

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